This is a set of self centering for drill guide tools for holding and centering while drilling and woodworking The height of the two feet can be adjusted according to the thickness of the board, making the drilling more accurate, a powerful woodworking tool Parameters: for Drill guide sleeve: 2/3/4/5/6/8/10mm. Wide range of applications: suitable for fixing on boards of various thicknesses, two claws are convenient for quick positioning of the hole center, dust removal groove design Material: stainless steel, surface oxidation treatment, high hardness, wear resistant, rust proof, durable, easy to use Specification: Material: Stainless Steel Size Chart: Length: approx. 140mm/5.51 inch, Diameter: approx. 50mm/1.97 inch, Thickness: approx. 32mm/1.26 inch Package Includes: 1 Piece Vertical Self Centering Dowel for Jig 7 Sizes Drill Bushings Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shoppingSpecifications:Material: Stainless SteelSize:Length: approx. 140mm/5.51 inch, Diameter: approx. 50mm/1.97 inch, Thickness: approx. 32mm/1.26 inchNote:1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shoppingPackage included:1 Piece Vertical Self Centering Dowel for Jig 7 Sizes Drill Bushings