1、Multiple Fittings: ABS body, light and strong. Come with keyway chuck, tapered depth control shaft and limit ring, spring rotation, reversible chuck bracket, built in V groove, alignment and adjustable fence 2、Facilitates Center Drilling: The V shaped groove on the base facilitates center drilling of round materials, such as dowels 3、Clear and Accurate Scale: The drilling guide adopts a clear and accurate scale, which can adjust according to the thickness of the wood for accurate alignment 4、Fast and Firm Clamping: Equipped with a quick clamping device for fast and firm clamping. With 1/4in(about 0.6 cm) hex shaft, can be used with cordless and wired drilling machines and impact drills 5、Larger Chip Removal Speed: The pin clamp has a larger chip removal speed, faster chips smooth, more labor saving drilling, and improving work efficiency Item Type: Portable Drill Guide Material: ABS+aluminum alloy+stainless steel+brass Purpose: Woodworking locator Color: Red Chuck Clamping Range: 1.5 ~ 10mm / 0.06 ~ 0.39in 3 x ABS Board 3 x Aluminum Alloy Rod 1 x Aluminum Alloy Rod with Spring 1 x Connecting Rod 2 x Brass Rod 4 x Screw 5 x Nut 5 x Big Screw 1 x Socket 1 x Chuck 1 x Special Key