1、The jig and the locator are made of aluminium alloy, and the surface is anodized, which is durable and not easy to rust. 2、The maximum clamping distance is 52MM, suitable for DIY, woodworking drilling positioning and punching, very practical. 3、Equipped with 8mm, 10mm and 15mm three drill bits to satisfy the requirements of different drilling aperture sizes. 4、The operation is very simple, the clamping force is strong and it is not easy to slide, making your work more efficient. 5、The size is small, and the weight is light, so the storage and carrying are very simple, which makes your daily much easier. Item Type: Hole Drill Guide Jig Model: GGW 3-in-1 A Type Punch Material: Aluminium Alloy Clamping Range: Approx. 0 ~ 52mm / 0 ~ 2in Drilling Diameter: Approx. 8mm / 0.3in, 10mm / 0.4in, 15mm / 0.6in (the diameter of the three drill bits respectively) Round Dowel Diameter: Approx. 8mm / 0.3in Function: Furniture wood punch hole opener/punch locator. 1 x Hole Drill Jig 1 x Round Dowel Locator 3 x Drill Bit 1 x Guide Ring 3 x Drill Stop 3 x Fixing Screw 3 x Round Dowel 1 x Hex Wrench 1 x Drill Bushing Wrench Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.