[Features] Self Centering Doweling Jig Type: Straight Hole, Maximum Support Plate Thickness: 1-3/4 Inch (45mm), Drill Guide Diameter: 6mm, 8mm, 10mm Easy to Use - Adjust the position of the feet to fit different thickness board, quick and easy to punching holes on the side of wood boards with good verticality and higher punching accuracy. 3 Sizes Drill Bushings - Comes with 3 different sizes (6mm / 8mm / 10mm) Drill Bushings in the package, so that to easily drill holes of different sizes and meet various holing needs. Wide Application - Widely used for precise positioning when punching holes on the side of wood boards, quick positioning of the opening allows for seamless splicing between the boards. High Quality - Made of aluminum alloy with excellent surface oxidation treatment, with high hardness, wear-resistant, rustproof, solid, durable and excellent for use. [product information] product name:Self Centering Doweling Jig color:black Material:aluminum alloy size:Diameter 45mm Packing list (you can get after purchasing one item): Self Centering Doweling Jig*1 Please understand: 1. Due to the long shipping time, the item may be damaged during the shipping process, if the item is damaged, please leave us a message through the official website immediately before posting comments, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Colors may vary from monitor to monitor.