User Friendly Design: This adjustable doweling jig is designed for ease of use, accommodating wood thicknesses with 36 mm (1.42 inch) to create precision joints effortlessly. It features high precision scale for easy adjustment of drilling height and depth, along with a self tightening clamp to securely fix the guide on the woodPrecision Engineering: The drilling guide kit is crafted with precision scale on its body, allowing adjustments according to board thickness. Its quick clamping mechanism facilitates easy assembly and disassembly, enhancing drilling efficiencyVersatile Application: This multipurpose drilling guide is ideal for creating dowel holes and pocket holes. With adjustable scale suitable for different wood thicknesses, it excels in pocket hole jig applications. The added chip removal hole ensures fast and smooth debris clearance, saving time and effort Material: Constructed from quality metal, this tool promises durability and long term performance in various woodworking projectsSize and Complete Set: Measuring 8.8cmx6.5cmx10cm/3.46inchx2.56inchx3.94inch, this compact tool comes as a complete set including 1 hole opener kit, making it an essential addition to any woodworking toolkit Size Chart: 8.8cmx6.5cmx10cm/3.46inchx2.56inchx3.94inch Package Includes: 1 Pocket Hole Jig Kit Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.