This set of pocket hole making instruments is made from top-quality material that can withstand long-term use. It contains aluminum alloy material, which ma high durability, not easy to deform. Good build quality, provides practicality. Characteristics Colour blue Material: aluminum alloy; Size: 13,20X9,80X6,50 cm/5,19X3,85X2,55 inch Clamping range: 138mm Suitable plug diameter: 9mm Made of aluminum alloy, anti-corrosion, wear-resistant and strong, small and light, used to connect furniture and wooden boards. Positioning device ma greater chip removal capacity, faster and smoother chip removal, faster and less labor-intensive drilling. The drilling guide rail, with clear and precise scale, can be positioned in the right position according to the thickness of the wood and precisely aligned, suitable for wood thickness of 1238 mm. Drill locator guide rail with fast clamp, fast and strong attachment, improve drilling efficiency. The extended drill sleeve of the woodworking handle makes punching accurate, the hole inclined at an angle of 15 degrees, the connection is stronger, and the corresponding plug diameter is 9 mm. list of packages 1x locator 10x plugs 1x drill bit 1 x bit 1x key 24 x Screws