3" x 1", 1/4" Shank, 40 Grit, 25000 RPM, Premium Aluminum Oxide Blend Coated Abrasive, Heavy Cotton Colth Backing, Interleaf, Abrasive Flap Wheel Abrasive Flap Wheel Type Interleaf Diameter 3 Inch Thickness 1 Inch Shank Size 1/4 Inch Grit Size Number 40...