Our 3M Disc Pad Hub enables operators to select face plates with four different levels of flexibility (soft, medium, hard and extra-hard). The disc pad hub holds a face plate firmly in position, and a center hole fiber disc is secured to the tool spindle with the retainer nut.
Disc pad hub and retainer nut has a M14-2 INT thread for use on grinders with M14-2 threaded spindle and can be used on all 3M Fiber Disc face plates. Use with 4-1/2 inch through 9 inch Fiber Discs with 7/8″/22mm center hole.

Dynabrade 78291 2" Dia. x 2A M Medium Type R Unitized Locking-Type Disc, 25/pack
3M 05228 Scotch-Brite Surface Conditioning Belt, SC-BS, A/O Medium, 3-1/2 in x 15-1/2 in, 7000028435
Norton 66623325035 - 2" 120 Grit Fine Grade Aluminum Oxide Vortex Rapid Prep Green TR Non-Woven Surface Preparation Disc, 50 Each
3M 11414, Roloc Disc 361F, P120 XF-weight, TR, 1 in, Die R100N, 7000045104
3M 45704, Cubitron II Hookit Cloth Disc 947A, 60+ X-weight, 5 in x NH, Die 500X, 7100113137
Norton 66261199696 - 3" X 1/4" X 1/4" Vortex Rapid Blend Unified Wheel, 7AM U2305, 40 Each
3M 16583, Accuspray Atomizing Head, Green, 1.3 mm, 7010309279
3M 82511, Steel Mesh Faceshield Screen W96MW 82511-00000, with Clear Eyeshield, Headgear Not Included 10 EA/Case, 7000127231
Norton 66261127733 - 2" X 50 Yard 60 Grit Metalite™ Aluminum Oxide Cloth Roll, 1 Each
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092 
