The Benchmark Abrasives 2-1/2" x 1/4" mounted abrasive nylon cup brush is designed for cleaning flat and gently contoured surfaces, surface preparation, and finish refinement where a compact cup profile provides efficient contact across small-to-medium work areas. Its abrasive-impregnated nylon filaments deliver controlled abrasive action while remaining flexible enough to conform to the surface.
The 2-1/2" cup diameter gives the brush broader contact than an end brush while maintaining good control for detail work, edges, and smaller surfaces. A 1/4" hex shank mounts securely in compatible drill chucks, and the brush is available in 80, 120, and 240 grit for applications ranging from coarse cleaning through finer surface preparation.
Quantity: 1 Piece
Product Specifications
Specification
Details
Brush Diameter
2-1/2"
Brush Type
Mounted Abrasive Nylon Cup Brush
Filament
Abrasive-Impregnated Nylon
Filament Style
Crimped
Shank
1/4" Hex
Available Grits
80, 120, 240
Grit Colors
Gray – 80 / Orange – 120 / Blue – 240
Maximum RPM
10,000 RPM
Quantity
1 Piece
Features
Abrasive-impregnated nylon filaments for controlled cleaning and surface preparation
2-1/2" cup profile provides broad face contact in a compact format
1/4" hex shank for secure retention in compatible drill chucks
Flexible filaments conform to the work surface during use
Available in coarse, medium, and fine grit options
Color-coded filaments make grit identification easy
Well suited for cleaning flat or gently contoured surfaces and general surface preparation
Applications & Performance
Choose the grit based on the material and desired level of aggressiveness:
The cup shape concentrates contact across the face of the brush, making it useful for cleaning and preparing flat or gently contoured surfaces. Use light, controlled pressure and allow the abrasive nylon filaments to do the work.
Materials
Suitable applications vary by grit and may include:
Steel
Stainless steel
Cast iron
Aluminum
Brass
Copper
Wood
Fiberglass
Plastic
Hard rubber
Stone and masonry
Machine Compatibility
Designed for compatible rotary drills capable of securely retaining the 1/4" hex shank.
Compatible examples include:
DEWALT® DCD771
Makita® XFD13Z
Milwaukee® Models: 2801-20, 2803-20
These models match the shank and speed requirements. Before use, check the tool instructions for brushing use and permitted brush size, and confirm secure chuck grip and clearance.
Do not use in hammer or impact mode.
The brush is rated to a maximum of 10,000 RPM. This is a maximum safe operating speed, not a recommended working speed. Do not use on a tool whose maximum speed exceeds 10,000 RPM.
Safety Tips
Always wear appropriate eye, face, respiratory, hearing, and hand protection for the application.
Never exceed the brush's 10,000 RPM maximum rating.
Fully secure the 1/4" hex shank in the drill chuck before operation.
Inspect the brush before use and discontinue use if the brush or mounting components are damaged.
Start with light pressure and allow the abrasive nylon filaments to perform the work.
Avoid excessive pressure or speed that can generate unnecessary heat.
Test on an inconspicuous area when working on polished, coated, plastic, wood, or other appearance-sensitive surfaces.
Follow all power-tool instructions and applicable accessory-clearance requirements.
Wet/dry brush suitability does not override restrictions of the power tool being used.
The Benchmark Abrasives 2-1/2" x 1/4" mounted abrasive nylon cup brush is designed for cleaning flat and gently contoured surfaces, surface preparation, and finish refinement where a compact cup profile provides efficient contact across small-to-medium work areas. Its abrasive-impregnated nylon filaments deliver controlled abrasive action while remaining flexible enough to conform to the surface.
The 2-1/2" cup diameter gives the brush broader contact than an end brush while maintaining good control for detail work, edges, and smaller surfaces. A 1/4" hex shank mounts securely in compatible drill chucks, and the brush is available in 80, 120, and 240 grit for applications ranging from coarse cleaning through finer surface preparation.
Quantity: 1 Piece
Product Specifications
Specification
Details
Brush Diameter
2-1/2"
Brush Type
Mounted Abrasive Nylon Cup Brush
Filament
Abrasive-Impregnated Nylon
Filament Style
Crimped
Shank
1/4" Hex
Available Grits
80, 120, 240
Grit Colors
Gray – 80 / Orange – 120 / Blue – 240
Maximum RPM
10,000 RPM
Quantity
1 Piece
Features
Abrasive-impregnated nylon filaments for controlled cleaning and surface preparation
2-1/2" cup profile provides broad face contact in a compact format
1/4" hex shank for secure retention in compatible drill chucks
Flexible filaments conform to the work surface during use
Available in coarse, medium, and fine grit options
Color-coded filaments make grit identification easy
Well suited for cleaning flat or gently contoured surfaces and general surface preparation
Applications & Performance
Choose the grit based on the material and desired level of aggressiveness:
The cup shape concentrates contact across the face of the brush, making it useful for cleaning and preparing flat or gently contoured surfaces. Use light, controlled pressure and allow the abrasive nylon filaments to do the work.
Materials
Suitable applications vary by grit and may include:
Steel
Stainless steel
Cast iron
Aluminum
Brass
Copper
Wood
Fiberglass
Plastic
Hard rubber
Stone and masonry
Machine Compatibility
Designed for compatible rotary drills capable of securely retaining the 1/4" hex shank.
Compatible examples include:
DEWALT® DCD771
Makita® XFD13Z
Milwaukee® Models: 2801-20, 2803-20
These models match the shank and speed requirements. Before use, check the tool instructions for brushing use and permitted brush size, and confirm secure chuck grip and clearance.
Do not use in hammer or impact mode.
The brush is rated to a maximum of 10,000 RPM. This is a maximum safe operating speed, not a recommended working speed. Do not use on a tool whose maximum speed exceeds 10,000 RPM.
Safety Tips
Always wear appropriate eye, face, respiratory, hearing, and hand protection for the application.
Never exceed the brush's 10,000 RPM maximum rating.
Fully secure the 1/4" hex shank in the drill chuck before operation.
Inspect the brush before use and discontinue use if the brush or mounting components are damaged.
Start with light pressure and allow the abrasive nylon filaments to perform the work.
Avoid excessive pressure or speed that can generate unnecessary heat.
Test on an inconspicuous area when working on polished, coated, plastic, wood, or other appearance-sensitive surfaces.
Follow all power-tool instructions and applicable accessory-clearance requirements.
Wet/dry brush suitability does not override restrictions of the power tool being used.
Frequently Asked Questions
This brush uses abrasive-impregnated nylon filaments rather than steel wire. The nylon filaments provide flexible abrasive cleaning and surface-preparation action while conforming to the workpiece.
Choose 80 grit gray for coarser paint, oxidation, and surface-rust removal on harder metals; 120 grit orange for medium cleaning on masonry and softer metals; and 240 grit blue for finer work on plastics, fiberglass, hard rubber, and wood finishes. Test first to match the grit to your desired finish.
Compatible drill examples include DEWALT® DCD771, Makita® XFD13Z, and Milwaukee® 2801-20 and 2803-20. Their maximum speeds are below this brush's 10,000 RPM rating. Check the tool instructions for brushing use and permitted brush size, then confirm secure chuck grip and clearance.
Yes. The 1/4" dimension is the hex shank size; the brush diameter is 2-1/2". The shank mounts in a compatible drill chuck.
Do not assume impact-driver compatibility from the hex shank alone. Use the brush with compatible rotary drills and do not operate in hammer or impact mode.
Do not use it in a die grinder solely because it has a 1/4" shank. Many die grinders operate above the brush's 10,000 RPM maximum, and secure retention of a hex shank in a collet is not established.
No. 10,000 RPM is the published maximum speed rating, not a recommended operating speed. Use only the speed required for effective brushing while staying within the brush and tool limits.
Abrasive nylon can change the surface finish. Select the appropriate grit and test an inconspicuous area when appearance is important.
Brush wet/dry capability does not override the restrictions of the power tool. Follow the machine manufacturer's instructions before introducing liquids.
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