1Complete Accessories: This kit contains tools such as locator, drill bits, nuts and limit rings, which are used for woodworking drilling and marking. 2Durable Materials: The positioner has an anodized surface, corrosion and wear resistant, and can be used in various environments. 34 Kinds of Scribing: 4 kinds of marking specifications are available for fixing and centering when woodworking drills. 4Various Sizes: Equipped with nuts, drill bits and limit rings of different specifications, which can be used in different positions and angles. 5Precise Positioning: These parts have standard sizes to ensure precise positioning and better splicing effects. 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 / 0.24in94mm / 3.7in60mm / 2.4in 8mm / 0.31in110mm / 4.3in77mm / 3in 10mm / 0.39in120mm / 4.7in87mm / 3.4in 1 x Positioner 3 x Nuts 2 x Wrenches 3 x Drill Bits 3 x Limit Rings 30 x Wooden Dowels 1. Manual measurement of parameters has a certain error. 2. Please match the appropriate design size before use.