Features: 1.IMPACT RESISTANT: Handheld woodworking dowel jig handle is made of high impact plastic, hardness and strength, not easy to damage, can be used for a long time. 2.HIGH ACCURACY: Handheld woodworking dowel jig guide set has high accuracy. Quick woodworking drilling guide from the center plate and metal bushing, ensure accurate alignment when drilling. 3.EASY TO ADJUST: Handheld woodworking dowel jig kit is easy to set to any length, set once and reuse without further measuring. Suitable for most hand drills and augers. 4.EASY TO USE: Metal bushings ensure accurate pin alignment when drilling for thick wood. Drill two parts of the joint consecutively on one jig for perfect results. 5.APPLICABLE: Drill guide tools for 6mm / 0.24in, 8mm / 0.31in, 10mm / 0.39in mortise and tenon joints for 1/2 inch to 1?1/4 inch lumber thicknesses, perfect for DIY home and office woodworking. specification:Item Type: Handheld Woodworking Dowel Jig Kit Material: Alloy Steel, Plastic PackageList: 2 x Hole Punch 2 x Adjustment Plate