3M Rubber Slotted Expander Wheel 77717, 1 in x 1 in 1/4 Diameter Shank, 1 per case
Use with 1 inch diameter x 1 inch wide Abrasive Bands or Belts. Has slotted rubber drum which expands with centrifugal force to keep the band tight while grinding. Has 1/4 inch diameter shank to fit 1/4 inch collet chucks or drill chuck.
UPC Number 00051144777174
MFG Number 60980011617