Our 3M Disc Pad Hub holds the face plate firmly in position to support a fiber disc with a 7/8 inch center hole, which is secured to the hub with a compatible retainer nut. The disc pad hub enables operators to select face plates with four different densities?Soft, Medium, Hard and Extra-Hard?offering the convenience of using a single power tool for multiple grinding applications. Face plates are sold separately.

Dynabrade 11649 Contact Wheel, 2" Dia. x 1" W x 5/8" I.D., Standard Face, 70 Duro Rubber
Dynabrade 52931 1/4" Drill, .4 HP, Rear Exhaust, 500 RPM
Dynabrade 11213 Contact Arm Ass'y, 5/16" Dia. x 3/8" W, Steel Wheel, with 1/2" W Platen
Dynabrade 11517 Idler Arm
Dynabrade 95691 1/4" NPT Single Pivot Dynaswivel
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091 
