Description: 【Premium Material】: The Woodworking Drill Guide Jig is made of premium aluminum alloy, with stainless steel drill sleeve and brass nut, is sturdy, and can be used for a long time 【Accurate】: The Self Centering Doweling Jig has a good positioning accuracy scale, allowing you to drill accurately and easily 【Convenient Using】: The Puncher Locators is designed for fixation and centering of drilling and woodworking, easy to use, and practical; Clamping wood board thickness requirement: 18≤wood board thickness≤52mm 【Wide Application】: The Wood Drilling Tool Set is applicable to drill holes accurately and easily. Wonderful for woodworking, board splicing, cabinet installation, and other DIY household projects or professional use 【Ideal Tool for Panel Furniture】: The Puncher Positioners is designed specifically for woodworking drilling, making it the ideal tool for panel furniture Size Chart: 80mmx40mmx70mm/3.15inchx1.57inchx2.76inch Packaging size 19cmx18cmx6.5cm/7.48inchx7.09inchx2.56inch   Package Includes:1 Drill Guide Jig, 1 Drill Head(8mm Drill Head, Including Limit Circle), 1 Hex Wrench, 1 Nut Wrench Note: Please allow slightly errors due to manual measurement and different packages.