KATSU Self Centering Dowelling Jig Kit Imperial Sizes, Hole Drilling Guide Woodworking Positioner Locator Tool for Thick Timbers 105409

Aluminium main body with hardened carbon steel screws Clamp on different thickness of wood boards from 10mm to 55mm Drill-hole sizes are: 1/4"", 3/8"", 5/16"", 7/16"", 1/2"" clearly marked The drill bushings adopt premium material, high strength and accurate positioning Suitable for drilling holes and making joints of wood boards