Features 1、The main body is made of aluminum alloy, and the surface of the drill bit is chrome‑plated. After heat treatment, it has high hardness and strength. 2、The clamp can be adjusted by a knob to suit the drilling operations of wood boards of different thicknesses. 3、Equipped with drill bit and woodworking hole opener, can make holes of different sizes. 4、Package including all the assorted accessories, and everything you need is provided. 5、Good wear resistance woodworking locator keeps long service life, which adopts accurancy crafts. Specification Item Type: Doweling Jig Drilling Guide Kit Material: Aluminum Alloy Color: Blue Thickness of Clamping Template: Approx. 10-45mm/0.4-1.8in Adjustable Scale of Eccentric Wheel: Approx. 15-35mm/0.6-1.4in Adjustable Scale on Threaded Rod: Approx. 10-30mm/0.4-1.18in Oblique Hole Device Size: Approx. 78x50x31mm/3.1x2x1.22in Screw Hole Size: Approx. 8.5mm/0.3in Fixture Size: Approx. 63x50x63mm/2.5x2x2.5in Drill Bit Length: Approx. 170mm/6.7in Limit Ring Diameter: Approx. 19mm/0.7in Package List 1 x Punch Locator 3 x Drill Bit 3 x Limit Ring (10mm 10mm 8mm) 1 x Guide Sleeve 10mm 4 x Screw 1 x Hex Wrench 10 x 15mm Eccentric Nut 10 x Embedded Parts 10 x Connecting Rod 20 x 8mm Round Wood Dowel 1 x Half Moon Wrench