TOOL SPECS: Steel lock collar measuring 11/16" outside diameter with a 1/2" inside diameter.
BEARING COLLAR: This lock collar tightens with a set screw onto the shank of a router bit, firmly holding a bearing on the shank between the collar and the head of the tool.
1/4" SHANK: Designed for router bits with a 1/4" shank.
WHITESIDE MACHINE LC-1/4 1/4 ID BEARING LOCK COLLAR