Medium Density, 1/4in -20 Female Thread, For PSA Discs
Hard Density, 3/8in -24 Female Thread
Designed for use with quick locking abrasive discs
2in (51 mm) and 3in (76 mm) Diameter pads include 50103 Pad Adapter to convert 1/4in -20 female thread to 1/4in Diameter shank, for use with Collets and Chucks
Rubber, Medium Density, 5/8in -11 Female Thread