3 in 1 Adjustable Doweling Jig is a multifunctional drill guide for drilling dowel holes and vertical holes. Within self-tightening clamp, it is convenient to fix the drill guide on the wood. It is a perfect DIY woodworking tool kit, easy to operate and use. Description:6061 Aluminum alloy body, high hardness, anti-rust, high precision, stable and durable to use.Highly accurate and precise measurement to adjust the drilling height and depth.Within self tighten clamp, convenient to fixing drill guide on the wood.8/15mm Metal bushings accurate alignment when drilling hole,easy to adjusting drilling height and hole depth.Can be used for woodworking,Quick Positioning for different thickness, easy to producing joints.Make wood working easier,form a well constructed and solid wood working. Specifications:Material: 6061 AluminumClamping Range: 0-52MMScale Marking: Laser EngravingSurface Treatment: AnodizingColor: BlackSuitable: woodworking positioning punch Package list:1 * Woodworking drilling locator puncher tools Set Notes:1. Please allowed 1-3mm differences due to manual measurement, thank you for your understanding!2. Due to the difference between different monitors, please understand that t