THIS IS A NORTON COMPANY GENERAL PURPOSE GRINDING WHEEL DESIGNED FOR BENCH AND PEDESTAL SETUPS. IT FEATURES A 60/80 MEDIUM GRIT AND HAS OVERALL DIMENSIONS OF 10X1-1/4X1-1/4 INCHES. THE WHEEL INCLUDES BUSHINGS SIZED 1, 7/8, AND 3/4 INCHES, SUPPORTING VARIOUS ARBOR SIZES. THE MAXIMUM SAFE OPERATING SPEED FOR THIS GRINDING WHEEL IS 2485 RPM.