Benchmark Abrasives 4.5" Aluminum Oxide Type 1 Cut Off Wheels, 50-Count

The Benchmark Abrasives 4.5-inch Cut Off Wheels pack delivers 50 flat Type 1 discs designed for routine metal cutting and fabrication. Geared toward welders, fabricators, and DIYers working with metal stock, this bulk set solves the hassle of running out of abrasive discs mid-project while offering consistent cutting across several common metals.

Crafted from aluminum oxide, these wheels are built to cut cleanly through steel, stainless steel, cast iron, aluminum, rebar, pipes, tubes, and sheet metal. The thin profile produces burr-free edges while keeping operator vibration low for better handling and control. Rated for operation up to 13,000 RPM, they maintain fast cutting rates to help you power through repetitive cuts with minimal downtime.

Versatility is a strong point, as these discs are compatible with standard 4-1/2 inch and 5 inch angle grinders, die grinders, high-speed saws, chop saws, and stationary saws. They mount easily across all major tool brands, including Dewalt, Milwaukee, Makita, Bosch, Metabo, Ryobi, Craftsman, and Ridgid, making them an easy addition to existing workshop setups.

When it comes to trade-offs, the product specifications do not list the exact wheel thickness or the center arbor size, which requires buyers to verify arbor fit against their specific tool guards and mounting flanges. Additionally, these are dedicated cut-off discs, so they are limited to slicing tasks rather than surface grinding or blending work.

Verdict: If you regularly cut rebar, sheet metal, or tubing and need a reliable bulk supply of abrasive discs, this 50-pack from Benchmark Abrasives offers high-speed compatibility and broad tool support for your metalworking needs.

• Wheel Diameter: 4.5 inches
• Wheel Shape: Flat Type 1
• Abrasive Material: Aluminum Oxide
• Maximum Speed: 13,000 RPM
• Package Quantity: 50 wheels
• Compliance: Meets ANSI and EU standards

A great fit if you:

• Need a large 50-piece inventory of cutoff wheels for frequent fabrication jobs
• Cut a mix of materials like rebar, cast iron, aluminum, and stainless steel
• Operate 4-1/2 or 5-inch angle grinders rated up to 13,000 RPM
• Use tools from major brands like DeWalt, Milwaukee, Makita, or Bosch

Consider something else if you:

• Need dedicated thick wheels for heavy surface grinding rather than cutting
• Require non-standard disc diameters larger than 4.5 inches

What metals can these cutoff wheels cut?
They are suitable for cutting steel, stainless steel, aluminum, cast iron, sheet metal, pipes, tubes, and rebar.

What is the maximum operating speed for these discs?
These 4.5-inch wheels are designed to run at speeds up to 13,000 RPM.

Which tools and brands are compatible with these wheels?
They work with 4-1/2 and 5-inch angle grinders, die grinders, high-speed saws, stationary saws, and chop saws across brands like Dewalt, Milwaukee, Makita, Bosch, Metabo, Ryobi, Kobalt, Craftsman, and Ridgid.

Do these wheels meet recognized manufacturing standards?
Yes, they are manufactured using aluminum oxide materials that meet ANSI and EU standards.