3 in 1 Drilling Locator Puncher Tool Self-Centering Doweling Jig Drill Kit 6/8/10mm Hole Punching Tool for DIY Woodworking Features: High-quality aluminum alloy material, surface anodized, wear and corrosion resistant, not easy to affect the punching accuracy. The drilling locator has self-centering hole, and can be positioned with the same length continuously, making perforation more efficient. With adjustable metal bushing, make the positioning more accurate, can adjust the punching height and hole depth. Nice DIY woodworking tool, easy e, both novice and professionals can use. The kit includes a drill locator, 3 metal bushings and 1 wrench. Specifications: Type: Set A(Without Drill Bits)/ Set B(With Carbon Steel Drill Bits)/ Set C(With High-Speed Steel Drill Bits)(optional) Color: Blue Material: Aluminum Alloy Punched Hole Size: 6/8/10mm Package Size: 140 * 90 * 30mm/ 5.5 * 3.5 * 1.2in Package Weight: Set A: 220g/ 7.8oz                            Set B: 330g/ 11.6oz                            Set C: 340g/ 12.0oz Packing List: 1 * Drill Locator 3 * Metal Bushing 1 * Wrench