Through various positioning operations, this product can easily make 35mm hinge matching special holes, and the holes are precisely matched with the hinge. Features: The main bracket is made by overlapping multiple heavy metal bearings, which is more wear-resistant and smooth. Integrated blade and drill sleeve for easier and more convenient operation. Adjustable fixing clip at the bottom for stable clamping of the board. Made of fine quality material for long lifespan. Easy to operate and convenient in use. Specifications: Color: black, red, blue (optional) Material: aluminum+stainless steel+carbon steel+plastics Fitment: suitable for 35mm hinge hole positioning Item size: 160 * 120mm / 6.3 * 4.7in Package size: 220 * 195 * 100mm / 8.7 * 7.7 * 3.9in Package weight: 860g / 1.9lb Packing List: 1 * Hole Opener (with Opening Blade+Limit+Jackscrew) 1 * Spare Jackscrew 1 * Positioning Board 1 * Positioning Rod 1 * Sleeve 1 * Drill Bit 1 * Wrench 1 * Hexagon wrench