3M(TM) Rubber Slotted Expander Wheel 77717, Expanding Drum, 1" Diameter x 1" Width, 1/4" Shank, 18000 rpm, Black (Pack of 1)
3M(TM) Rubber Slotted Expander Wheel Use with 1-inches diameter by 1-inches wide abrasive bands or belts. It has slotted rubber drum which expands with centrifugal force to keep the band tight while grinding. Has 1/4-inches diameter shank to fit 1/4-inches collet chucks or drill chuck. 18000 maximum rpm. Black color