Features The main body is cast from high hardness aluminium alloy 6061, and the surface is anodized, wear‑resistant, rustproof, not easy to break. The drill bushing and drill stop are made of stainless steel, with high hardness, wear and corrosion resistant, offer strong clamping force. Straight hole drilling locator, the reasonable design is helpful for vertical drilling of round wood pins, and board type wood drilling. The clamping range is from 0 to 120mm, and the wide range will satisfy your various needs for drilling on plates of different thickness. Equipped with 6mm, 8mm and 10mm drill bits to meet the requirements of different aperture sizes, very practical and convenient. Specification: Item Type: Hole Drill Guide Jig Model: X700 Splint Material: Aluminium Alloy 6061 Drill Bushing/Drill Stop Material: Stainless Steel Drill Bushing Aperture: Approx. 6mm / 0.2in, 8mm / 0.3in, 10mm / 0.4in (three for each) Clamping Range: Approx. 0 ~ 120mm / 0 ~ 4.7in Function: Woodworking punch, board wood punch.  Package List: 1 x Hole Drill Jig Drilling Positioning Module 1 x Hole Drill Jig Module 1 x Extension Positioning Rod (with Slide Block) 9 x Drill Bushing 3 x Dowel 4 x Hex Wrench 4 x Drill Stop 10 x Screw Note: 1. When using the tool, you need to assemble it yourself, easy to operate;2. Pay attention to check that all screws are tightened before starting to use;3. There are three drill bits in this set of products, but there is no electric drill. The drill hole diameter of the drill bit is 6/8/10mm. Package List 1 x Hole Drill Jig Drilling Positioning Module 1 x Hole Drill Jig Module 1 x Extension Positioning Rod (with Slide Block) 9 x Drill Bushing 3 x Dowel 4 x Hex Wrench 4 x Drill Stop 10 x Screw