Superior Electric RSP28-K 5 Inch Sander Pad - Hook and Loop Replaces Milwaukee OE # 51-36-7090, Ryobi OE # 300527002, 975241002, 974484001, Rigid OE # 300527002 (2/PACK) Model: RSP28-K Misc. This part is compatible with: Milwaukee: 6021-21 (SER B19A) 5 Random Orbit Palm Sander Ryobi: RS240, RS241, RS280, RS2418, RS280VS