3M Roloc Shank, 45102, silver, 1 /4 in (6.35 mm) 3M Roloc Shank allows 3M Roloc Disc Pads to fit a collet on a die grinder or disc sander, or a drill chuck on a drillThe 1/4 in (0.64 cm) external threads fit 3M Roloc Disc Pads with 1/4-20 internal threads. Product Information Brand 3M Part # 7000045770 Origin Country USA Product Type Mandrels Extra Product Information3M Roloc Shank enables you to secure a 3M Roloc Backup Pad to a die grinder or disc sander, adding versatility to tools you may already own.?The short, 2 in (5.08 cm) shaft of the 3M Roloc Shank keeps the abrasive closer to the tool, resulting in less vibProduct Information1/4-20 external threads fit disc pads with 1/4-20 internal threadsAdapter builds versatility and flexibility into existing toolsEnables user to attach a 3M Roloc Disc Pad to a die grinder or disc sanderShorter shaft keeps the abrasive closer to the too