Description: Material: Vertical drill guide doweling jig kit is made of aluminum alloy, which is strong and wear resistant, not easy to deform, ensuring long term performance and reliabilityEasy to Install: Guide doweling jig kit, high reliability and performance, compact and portable, easy to use, to meet your different needsQuality: Positioning puncher, professional manufacturing, stable performance, help you work on wooden furniture easily and accurately, saving time and effortFunction: The woodworking punching tool is equipped with different sizes of color drill sets to meet your different work needs, improve work efficiency, and make furniture more beautifulWide Application: Hole puncher has many uses, suitable for DIY home projects, professional woodworking, furniture making, etc Specification: Material: Aluminum alloy Size Chart: 4.8 cmx4 cm or 1.89 inchx1.57 inch Package Includes: 1x Vertical Positioning Puncher (with 6 mm or 0.24 inch, 8 mm or 0.31 inch, 1 cm or 0.39 inch Drill Bushing) Note: Please allow slightly errors 1-2cm differences due to manual measurement.