This shank has a 1/4 inch diameter to fit 1/4 inch collet chucks or drill chucks. It also has a 1/4-20 external thread to fit 3M Roloc Disc Pads with 1/4-20 internal threads.
Standard Equipment Included: Collet Cone Set 1/4?ö(192986-3),Wrench 13 (781203-2), Wrench 19 (781206-6), Side Handle Set (192985-5) shown with optional accessory