Description: Function: Handheld dowel jig can be used to vertically punch holes in wooden boards and the edges of wooden boards, which is convenient for wooden board splicingMaterial: The woodworking drill guide jig is made of plastic and wood, which is sturdy and wear resistant, has high strength and long service lifeSelf Centering Punch Locators: The Woodworking dowel jig is equipped with 6 8 10 mm/0.24 0.31 0.39 inch bits, which can accurately aligns the wood when punching and accurately drill the distance. The baffle adjustment scale is 0-50 mm/0-1.97 inch, which makes it convenient for you to adjust the position of the baffle according to your needsSize: Handheld drill guide is small and compact, easy to carry and store, and will not take up too much spaceWide application: Straight hole puncher adopts a handheld design, which is easy to hold and is an ideal tool for home, wood, and woodworking Specification: Material: Plastic Wood Size Chart: Puncher: 7.2 cmx18.5 cm/2.83 inchx7.28 inch6 mm Bit: 9.3 cm/3.66 inch8 mm Bit: 11.6 cm/4.57 inch10mm Bit: 13.4 cm/5.28 inch Package Includes: 1 Woodworking Dowel Jig7 Bits60 Wood Tips6 Dowel Pins Note: Please allow slightly errors due to manual measurement and different monitors.