Premium Quality: The drill bit is made of carbide alloy, making the cutting sharper, the blade features high precision, smooth cutting, good impact resistance. Concealed Hinge Boring Jig: Features a 'V'-locator that works from a center reference line, easily locates the center points of hinges and mounting plates, the hole position is accurate. Easy to Use: Simply dip the cup hole on the cabinet door or desk yourself with the hinge drill template, even if you are not a professional, you can quickly and easily find the drill center. Right Size: The drill diameter is 35mm, suitable for 35mm concealed hinges. Package Includes: 1 x positioning unit and 1 x Forstner drill bit, ideal for drilling concealed hinges and locks. Versatility: Suitable for drill press, bench drill, vertical drill, etc. All wood and wood products, plastics, plywood and other materials you need for exquisite perforation, suitable for industrial hinge installation, woodworking and maintenance, model making, etc.