Self-Centering Doweling Jig (Plus 10mm Bushings)

This Doweling Jig automatically centers itself on round, square or irregular shapes. Handles stock 10~50mm thick with drill-hole sizes: 1/4"(6mm), 5/16"=(8mm), 3/8", ( +10mm ), 7/16" and 1/2".

Eight hardened steel bushings are provided: 2 each of 1/4", 5/16", 3/8" and 10mm to fit most wooden dowels. You can drill two identical parallel holes without moving the jig.