Feature: 1. Complete Accessories: This kit contains tools such as locator, drill bits, nuts and limit rings, which are used for woodworking drilling and marking. 2. Durable Materials: The positioner has an anodized surface, corrosion and wear resistant, and can be used in various environments. 3. 4 Kinds of Scribing: 4 kinds of marking specifications are available for fixing and centering when woodworking drills. 4. Various Sizes: Equipped with nuts, drill bits and limit rings of different specifications, which can be used in different positions and angles. 5. Precise Positioning: These parts have standard sizes to ensure precise positioning and better splicing effects. Specification: Item Type: Dowelling Drill Guide Kit Material: Aluminum alloy, high speed Positioner Length: Approx. 14cm / 5.5in Positioner Thickness: Approx. 12mm / 0.5in Positioner Scribe Specification: 1/2, 3/8, 1/4, 1/8, 7/16, 5/16, 3/16, 1/16 Guide Nut Inner Diameter: Approx. 6mm / 0.24in, 8mm / 0.31in, 10mm / 0.39in Limit Ring Size: Approx. 6mm / 0.24in, 8mm / 0.31in, 10mm / 0.39in Woodworking Bits Specification: Diameter Approx. Length Approx. Working Length Approx. 6mm / 0.24in 94mm / 3.7in 60mm / 2.4in 8mm / 0.31in 110mm / 4.3in 77mm / 3in 10mm / 0.39in 120mm / 4.7in 87mm / 3.4in . Package List: 1 x Positioner3 x Nuts2 x Wrenches3 x Drill Bits3 x Limit Rings Note: 1. Manual measurement of parameters has a certain error.2. Please match the appropriate design size before use.