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3" A/O Quick Change Discs - 25 pack

SKU BM-QC3A024_25
Original price $0.00 - Original price $0.00
Original price $0.00
$13.99 - $13.99
Current price $13.99

Product Specification


Benchmark Abrasives 3" A/O (Aluminum Oxide) Quick Change Discs combine the effectiveness and versatility of AO cloth discs with the convenience of the quick-change roll-on backing. These quick-change sanding discs provide the perfect size for both tightly-contoured, hard-to-reach sections and larger surface areas. This sanding disc will remove paint, rust, glue, or other stubborn adhesives and materials. It delivers high-speed and long-lasting sanding to your metals. This sanding disc is perfect to be used generally in your household and by professionals as well.  These discs are perfect for cleaning, finishing, and deburring contoured or irregular surfaces.

Aluminum Oxide (A/O) is the most commonly used grain at an economical price point.  If you are looking for more aggressive stock removal or a premium option, check out our Zirconia and Ceramic options.

Quantity: 25 pieces

Use in combination with our 3” Quick Change Rubber Mandrel

**Mandrel sold separately**


  • Outer Diameter – 3” 
  • Shank Diameter – R-Type quick change connection
  • Backing Material – X-weight Cloth   
  • Grain – Aluminum Oxide (AO)
  • Available Grits – 24, 36, 40, 50, 60, 80, 120, 150, 180, 220, 240, 320, 400
  • Max RPM – 25,000

Machines Used On:

  • Die Grinders and hand-held pneumatic grinders


  • Ferrous Materials – Cast Iron, Steel, Stainless, Steel, Titanium, Nickel, Wrought Iron
  • Non-Ferrous Materials - Copper
  • Other Materials – Fiberglass, Plastic, Hard Rubber, Wood, Stone
  • Dry use ONLY

Safety Tips & Techniques:

  • Product requires a 3” Type R quick change backing pad to be used
  • Always wear proper PPE to include (but not limited to) safety glasses, hearing protection, respirator, and hand protection.  Keep all guards in place on your machine.



You read that right, Free shipping on orders over $100 + Orders placed before 12 noon PST = SHIP SAME DAY! 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.


Not happy with your product? Welcome to hassle free returns. Just shoot us an email, call the toll free number or click the chat button below. One of our helpful employees will get you set up with an RGA and return shipping info.

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