1. Hinge hole positioning ruler, made of high-quality aluminum alloy material, suitable for 35mm straight arm/mid bend hinges, with a hole edge distance of 3/4/5/6mm, which can be adjusted according to needs and has a wide range of applications 2. The limit opening device is made of hard alloy blade, with high-temperature heat treatment of the blade edge, high hardness, sharpness, and wear resistance. 3. : Suitable for installing household cabinet doors, cabinets, wardrobe hinges, with accurate positioning and simple and convenient operation. Model Number:Hinge hole positioning Application:Household Tool Set :Woodworking Type:Combination model:Hinge positioning ruler, hinge positioning ruler set Applicable scope:Woodworking hinge openings positioning mark scribing Colour:As Shown Material:aluminum alloy Size:85x80mm Package Contents: 1 * Hinge hole positioning Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.