The Century Drill & Tool 4-1/2 in. Air Cooled Backing Pad (77145) features a spiral, vented design that dissipates heat build-up during grinding, extending pad life dramatically compared to standard solid pads. It fits all popular brands of angle grinders and accepts all types of resin fiber discs.

• Spiral, air-cooled design dissipates heat to extend backing pad life
• Lasts up to 10 times longer than standard backing pads
• Compatible with all types of resin fiber discs
• Fits all popular brands of angle grinders
• 5/8 in.-11 arbor for universal angle grinder compatibility
• 4-1/2 in. diameter
• 20,000 RPM maximum safe speed
• Reduces heat-related disc slippage and premature wear
• Weight: 0.38 lbs