This split stop collar is specifically made to fit the shank of the UJK Technology pocket hole drill bit. Obviously, it will fit other drill bits with 9.5mm (3/8") shanks. The one-piece single split design offers greater clamping force compared to a set-screw shaft collar. Unlike a locking grub screw type, a split collar grips the shaft without leaving score marks. Pack of 2.
Internal diameter 9.5mm, external diameter 19mm, thickness 9.5mm.