Benchmark Abrasives 3" aluminum oxide quick change discs are an economical, versatile option for everyday sanding, deburring, rust cleanup, blending, and surface preparation. The larger 3" diameter provides more working coverage than a 2" disc, making it a better choice when you want to cover broader areas while still keeping the control of a compact quick change system.
Built with aluminum oxide grain on durable X-weight cloth backing, these discs are suited for general-purpose dry sanding across a wide range of materials. With grits from aggressive 24 grit through fine 400 grit, you can move from fast material removal to smoother surface refinement using the same quick change setup.
Economical aluminum oxide grain for general-purpose sanding and surface preparation
Durable X-weight cloth backing for handheld sanding applications
Larger 3" size for faster coverage on broader work areas
Wide 24–400 grit range for material removal through fine surface refinement
Type R quick change attachment for fast abrasive changes between sanding steps
Materials & Applications
Common Materials
Steel
Stainless Steel
Cast Iron
Titanium
Nickel
Wrought Iron
Copper
Fiberglass
Plastic
Hard Rubber
Wood
Stone
Common Applications
Deburring
Rust and oxidation cleanup
Surface preparation
Edge cleanup
Blending and smoothing
Scratch reduction
General sanding
Finish preparation
Use lower grit numbers for faster, more aggressive material removal. Progressively finer grits provide more control and a smoother scratch pattern for blending, deburring, sanding, and surface refinement during dry sanding.
Machine Compatibility
Designed for rotary quick change sanding tools using a matching 3" Type R backing pad.
Recommended Benchmark Abrasives Tools
Benchmark Abrasives Right Angle Pneumatic Quick Change Sander
Always verify that the disc, backing pad, and tool are properly matched and that the maximum operating speed of every component meets or exceeds the tool speed.
Safety Tips
Inspect the disc and holder before use.
Fully secure the disc to the Type R holder before operating.
Never exceed the maximum RPM of the lowest-rated component.
Follow the tool manufacturer's operating and safety instructions.
Frequently Asked Questions
Use a matching 3" Type R holder. Compatible choices include the Benchmark Abrasives BMT-QC90 Right Angle and BMT-QCPG Pistol Grip Quick Change Sanders. Other verified examples include Milwaukee 2984-20 with a suitable 1/4" shank holder and Dynabrade 48530, 48531, or 48532 with the matching 51346 Type R pad. Always confirm the RPM rating of the complete assembly.
They are a versatile choice for general sanding, deburring, rust cleanup, blending, and surface preparation. Aluminum oxide is a practical all-purpose option when you do not need the heavier sustained cutting performance of zirconia or ceramic.
A 3" disc covers more surface area and is better suited for broader work areas. A 2" disc is generally preferable when tighter access and more localized control are the priority.
Use a matching 3" Type R quick change backing pad. The backing pad is sold separately.
No. The disc uses a Type R quick change attachment. A separate holder or mandrel may use a 1/4" tool shank, which is a different connection.
No. These aluminum oxide quick change discs are specified for dry use only.
The 25-piece mixed pack contains 5 discs each of 24, 40, 60, 80, and 120 grit.
No. 25,000 RPM is the maximum rated speed. Never exceed the RPM rating of the lowest-rated component in the disc, holder, and tool assembly.
Benchmark Abrasives 3" aluminum oxide quick change discs are an economical, versatile option for everyday sanding, deburring, rust cleanup, blending, and surface preparation. The larger 3" diameter provides more working coverage than a 2" disc, making it a better choice when you want to cover broader areas while still keeping the control of a compact quick change system.
Built with aluminum oxide grain on durable X-weight cloth backing, these discs are suited for general-purpose dry sanding across a wide range of materials. With grits from aggressive 24 grit through fine 400 grit, you can move from fast material removal to smoother surface refinement using the same quick change setup.
Economical aluminum oxide grain for general-purpose sanding and surface preparation
Durable X-weight cloth backing for handheld sanding applications
Larger 3" size for faster coverage on broader work areas
Wide 24–400 grit range for material removal through fine surface refinement
Type R quick change attachment for fast abrasive changes between sanding steps
Materials & Applications
Common Materials
Steel
Stainless Steel
Cast Iron
Titanium
Nickel
Wrought Iron
Copper
Fiberglass
Plastic
Hard Rubber
Wood
Stone
Common Applications
Deburring
Rust and oxidation cleanup
Surface preparation
Edge cleanup
Blending and smoothing
Scratch reduction
General sanding
Finish preparation
Use lower grit numbers for faster, more aggressive material removal. Progressively finer grits provide more control and a smoother scratch pattern for blending, deburring, sanding, and surface refinement during dry sanding.
Machine Compatibility
Designed for rotary quick change sanding tools using a matching 3" Type R backing pad.
Recommended Benchmark Abrasives Tools
Benchmark Abrasives Right Angle Pneumatic Quick Change Sander
Always verify that the disc, backing pad, and tool are properly matched and that the maximum operating speed of every component meets or exceeds the tool speed.
Safety Tips
Inspect the disc and holder before use.
Fully secure the disc to the Type R holder before operating.
Never exceed the maximum RPM of the lowest-rated component.
Follow the tool manufacturer's operating and safety instructions.
Frequently Asked Questions
Use a matching 3" Type R holder. Compatible choices include the Benchmark Abrasives BMT-QC90 Right Angle and BMT-QCPG Pistol Grip Quick Change Sanders. Other verified examples include Milwaukee 2984-20 with a suitable 1/4" shank holder and Dynabrade 48530, 48531, or 48532 with the matching 51346 Type R pad. Always confirm the RPM rating of the complete assembly.
They are a versatile choice for general sanding, deburring, rust cleanup, blending, and surface preparation. Aluminum oxide is a practical all-purpose option when you do not need the heavier sustained cutting performance of zirconia or ceramic.
A 3" disc covers more surface area and is better suited for broader work areas. A 2" disc is generally preferable when tighter access and more localized control are the priority.
Use a matching 3" Type R quick change backing pad. The backing pad is sold separately.
No. The disc uses a Type R quick change attachment. A separate holder or mandrel may use a 1/4" tool shank, which is a different connection.
No. These aluminum oxide quick change discs are specified for dry use only.
The 25-piece mixed pack contains 5 discs each of 24, 40, 60, 80, and 120 grit.
No. 25,000 RPM is the maximum rated speed. Never exceed the RPM rating of the lowest-rated component in the disc, holder, and tool assembly.
SHIPPING
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Orders placed after noon will ship the following day.
Standard FREE shipping is UPS Ground or USPS priority depending on size and weight. Most customers receive
their order within 3-5 days from date of purchase. Faster shipping options available for additional charge.
Free shipping not available on international orders. Free shipping will only be available to orders being
delivered within the lower 48 states.
Refund
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