Makita GRH10 concrete drilling capacity is listed as 13/16 inch, which is the stated maximum concrete drilling diameter—not a recommended size for every job. [1] Use the figure as a boundary when matching a hole’s diameter and material to the tool, rather than as a target size by default. For a closer look, read Makita GRH10 Battery and Charger Compatibility.
That distinction helps you choose by the work in front of you: a small anchor hole and a wide installation opening are different demands, even when both are in concrete. The sections below keep the focus on what the rating says and how to use it as one part of a tool-fit decision.
Read the capacity as a diameter
A 13/16-inch capacity describes the diameter of the concrete hole associated with the GRH10’s listed rating. [1] It does not mean every concrete task calls for a hole that wide. Think of it as the upper diameter on the specification, then start with the hole the project actually requires.
For example, if a project calls for a narrow opening for a small fixture, the capacity figure is not a reason to enlarge it. If the work calls for a wider opening, compare that required diameter with the listed rating before choosing the tool. This keeps the decision tied to the installation instead of treating the largest stated capacity as the default.
Match the material and task
The rating is specifically for concrete drilling. [1] Keep the material in view when comparing tools: a concrete capacity figure does not describe the tool’s capacity in every other material. A hole in concrete and an opening in another material may call for different tool choices, so base the comparison on the surface you need to drill.
Also consider what the hole is for. A clean, correctly sized hole for a specific installation is a better target than simply using the largest diameter the specification lists. If the required diameter and material fit the tool’s stated concrete capacity, the rating can help narrow your choice; the task itself should determine the size you use.
Use the number as a selection check
Before choosing the GRH10 for a concrete job, identify the required hole diameter and material, then compare those needs with the 13/16-inch rating. [1] This is a practical screening step, not a claim that the maximum is the best size for your project.
In short, the useful meaning of 13/16 inch is a stated upper concrete-drilling diameter. [1] Let the hole the installation needs—and the material you are drilling—guide your tool choice, rather than letting the maximum rating set the job’s requirements.
How to use the 13/16-inch rating
Match the hole diameter your anchor, fastener, or installation requires to the tool’s listed concrete capacity before you start. Makita lists the GRH10’s concrete drilling capacity as 13/16 inch, so use that figure to judge whether the required diameter falls within its stated range. [1] You may also find this useful: Makita GRH10 Price: Tool Only vs Kit.
Start with the required hole size
Check the installation instructions or the fastener packaging for the specified hole diameter. For example, if a concrete anchor calls for a 3/8-inch hole, compare that requirement directly with the GRH10’s 13/16-inch capacity; the requested diameter is smaller than the listed capacity. [1]
Use the required diameter, not a guess based on the anchor’s appearance. A fastener that looks close in size to another one may still call for a different hole, so follow the stated hole size for the particular anchor or installation. This is practical sizing advice, not a claim that the capacity figure determines the right bit for every job.
When the required hole is smaller
If the specified hole is smaller than 13/16 inch, its diameter falls within the capacity figure Makita lists for concrete drilling. [1] That comparison can help you rule out a tool whose listed diameter is too small for the job, but it does not replace checking the installation’s required hole size.
For instance, if a mounting plan specifies a 5/8-inch hole, compare 5/8 inch with 13/16 inch before choosing the tool. The useful question is whether the required hole fits within the listed diameter range—not whether you should drill a larger hole just because the capacity allows it. [1]
When the required hole is larger
If the installation calls for a hole larger than 13/16 inch, choose a tool rated for that diameter rather than assuming the GRH10 can handle it. [1] For example, a specified 7/8-inch hole is larger than the GRH10’s stated concrete capacity, so look for a tool whose listed capacity covers that required diameter. [1]
Keep the comparison simple: identify the required hole diameter, then check whether it is smaller than, equal to, or larger than the listed figure. If it is larger, select a higher-capacity tool instead of treating the 13/16-inch rating as permission to exceed it.
What else affects a concrete drilling job?
A concrete drilling job depends on more than the hole’s diameter: plan for the required depth, the concrete you’re working in, and the correct setup. The GRH10 capacity figure gives you no drilling-time promise or performance guarantee for every concrete condition, so treat speed and results as job-specific rather than assuming a maximum-size hole will be quick or easy.
Plan for the actual hole and material
Before you start, write down what the installation requires: the hole diameter, its depth, and how many holes you need. For example, installing several anchors in a slab is a different workload from making one shallow hole for a small fixing, even if the diameter is the same. Use those details to plan the work instead of judging the job by diameter alone.
Concrete conditions can also vary from one work area to another. A patch, edge, or previously repaired spot may not drill like the main surface, so pay attention as you work and avoid assuming one hole predicts the effort for every other hole. If your task has strict depth or time requirements, check the current tool documentation and plan a test hole where that makes sense.
Check the bit and setup
Confirm that the bit is intended for the material and that its shank matches the tool’s interface before you begin. The capacity figure does not tell you which bits fit, so don’t use the diameter rating as a substitute for checking compatibility. For example, a bit with the diameter you need is not automatically the right bit for the tool.
Set up the tool and bit according to the tool manual, and follow the bit maker’s instructions for use. If either set of instructions gives a limit or setup step for your task, follow it rather than guessing from the capacity number. Stop and recheck the setup if the bit does not seat as expected or the tool behaves differently from what you anticipated.
Work to the task, not an assumed speed
Allow time for the actual work rather than estimating from the maximum diameter alone. Hole depth, the number of holes, the material, and the chosen bit all matter to planning, but the capacity figure does not promise a particular drilling speed or result in every concrete condition.
Keep your plan practical: confirm the hole requirements, check the bit and tool interface, and follow both makers’ operating instructions. That gives you a sound starting point without treating a single diameter rating as a guarantee for the whole job.
Examples of matching a hole to the rating
A 1/2-inch hole is below the GRH10’s listed 13/16-inch concrete capacity, while a hole at 13/16 inch reaches that stated limit. [1] For larger holes, choose a tool rated for the required diameter instead of treating the GRH10’s figure as permission to exceed it.
If the plan calls for a 1/2-inch hole
Compare the hole size on the job plan with the tool’s listed capacity: 1/2 inch is smaller than 13/16 inch. [1] For example, if an installation calls for a 1/2-inch hole, the diameter is within the GRH10’s listed capacity. [1]
Use the required hole size as your starting point, then check that your actual task and setup match the instructions for the tool and the hole-making accessory. If the installation calls for a different diameter than you planned, pause and reassess rather than choosing a size by guesswork.
If the plan calls for a 13/16-inch hole
A 13/16-inch hole reaches the GRH10’s stated concrete drilling capacity. [1] Before starting, verify that the task requirements and manufacturer instructions allow the planned hole and setup.
For example, if a drawing specifies a 13/16-inch opening, treat that as a limit-sized application—not as a reason to enlarge the opening or assume every job will behave the same way. Confirm the required diameter against the installation plan, and follow the instructions that apply to the tool and accessory.
If the plan calls for a larger hole
A hole larger than 13/16 inch exceeds the GRH10’s listed concrete capacity, so select a suitable tool rated for the required diameter. [1] For instance, if the plan specifies a 1-inch hole, compare that requirement with another tool’s stated capacity rather than trying to push past the GRH10’s limit. [1]
Keep the decision tied to the actual hole size: a tool that suits a smaller opening may not suit a larger one. If the specified diameter is unclear, confirm it with the person responsible for the installation before choosing a tool.
Common questions about GRH10 drilling capacity
What does 13/16 inch mean for the GRH10?
It is the stated concrete drilling capacity for the Makita GRH10. [1] In practical terms, the figure names a hole diameter; it does not tell you how long a particular hole will take or how deep you can drill. For example, a 13/16-inch hole may be the required diameter for one installation, while another job may call for a smaller opening.
Does the rating guarantee a particular drilling depth?
No. The 13/16-inch capacity figure alone does not guarantee a drilling depth. If your task calls for a deep hole, check the current product documentation for any applicable limits rather than inferring depth from the diameter rating.
Does 13/16 inch tell me how fast the GRH10 will drill?
No. The listed capacity does not provide a drilling-speed guarantee. A diameter rating is not a promise that every hole of that size will be drilled at the same pace, so avoid using it as a timing estimate for a project.
How should I apply the rating to a specific job?
Treat the figure as one specification to check, not a complete answer about the job. Before starting, look up the current product documentation for limits that apply to your planned work; for instance, confirm the instructions for the particular hole you need rather than assuming the listed capacity settles every question.
What should I verify if the job has unusual requirements?
Check the current product documentation for the limits relevant to your task. If a project calls for a particular depth or you need to plan how long drilling may take, do not infer those details from the 13/16-inch figure alone. Use the job-specific instructions to confirm the tool is appropriate for what you intend to do.
Choose the tool by the hole you need
Choose a tool for the hole your job requires, and move to a higher-capacity model when that hole is larger than the GRH10’s listed limit. Makita lists the GRH10’s concrete drilling capacity as 13/16 inch. [1] Use that figure as a practical boundary when you plan the work, not as a reason to make every hole as large as possible.
Start with the required hole
Before choosing a rotary hammer, identify the diameter the job calls for. A small hole for a light-duty installation and a wider hole for a larger fixing put different demands on the tool, so the needed diameter is a more useful starting point than the biggest number in a specification.
Then compare that diameter with the GRH10’s listed capacity. If the required hole is within the stated limit, the diameter alone does not rule the tool out. If the job calls for a hole beyond 13/16 inch, select a tool rated for that larger diameter rather than planning to push past the GRH10’s listing.
Consider the conditions, not just the number
The same diameter can be part of a straightforward task or a more demanding one, depending on the job. Think about what you are installing, how many holes you need, and what the site allows before settling on a tool. For example, one occasional hole for an installation is a different work plan from a run of repeated holes across a project.
Treat the capacity as one part of your decision, not a complete prediction of how the work will go. A listing gives you a stated diameter to compare against your plan; it does not mean the maximum size is automatically the best choice for every concrete job. Choose around the actual requirement, and check current product documentation for limits specific to your planned work.
Make the choice before drilling
Write down the hole size for each task, then sort the jobs into those within the GRH10’s listed diameter and those that need a higher-capacity tool. If your plan changes and a required hole grows beyond the stated limit, reassess the tool rather than treating the earlier choice as good for every later step.
The key point is simple: use 13/16 inch as the GRH10’s listed upper concrete-hole diameter, then match the tool to the real job. Before you start, confirm the required hole size and choose a tool rated for it.