1、Excellent Material: Made of excellent aluminum alloy material, with anodized surface, wear resistant and corrosion resistant. 2、For Fixing and Centering: Used for fixing and centering when woodworking drills, with good verticality, more accurate board splicing. 3、Multiple Marking Specifications: With 4 specifications of marking function, has accurate positioning, easy to use and simple to operate 4、With 3Pcs Nuts: There are 3 sizes of nuts of 6mm, 8 mm and 10mm, which are suitable for most drill bits and meet different drilling needs. 5、For Woodworking: Suitable for most woodwork industry, used for cabinet doors, floors, panels, desktops, wall panels, etc. 1 x Positioner3 x Nuts1 x Wrench Item Type: Drilling LocatorMaterial: Aluminum alloyPositioner Length: Approx. 14cm / 5.5inPositioner Thickness: Approx. 12mm / 0.5inPositioner Marking Specifications: 1/2, 3/8, 1/4, 1/8, 7/16, 5/16, 3/16, 1/16Guide Nut Inner Diameter: Approx. 6mm / 0.24in, 8mm / 0.31in, 10mm / 0.39in