Joinery becomes a breeze when you can easily locate and match up drilled holes for dowels. Pro-Tech's precision designed self-centering dowel jig caters for common dowel sizes 6mm, 8mm, 10mm. The robust aluminium body with punch hole locators, brass lock bolts and tempered steel drill bushings makes this jig worth joining the wood shop's shelf. Wood thicknesses ranging from 16mm up to 60mm can easily be centre scored, punched, drilled for accurate dowel joining. Pro-Tech, Tools for professionals.