31pcs Air Die Grinder Set. 1" 2" 3" Type R Roll Lock Rotary Holder Pads 1/4" Shank For Die Grinder Sanding. 21/41Pcs 2" Type R Sanding Discs Set 1/4" Holder Die Grinder Quick Change Disc. Mini Air Sander Polisher 1" 2" 3" Random Orbital Car Body Air Polisher BUffer.