Features Good Performance: 35mm hinge boring bit, 4 tooth and 3 flute design, uniform force during work, high concentricity, less vibration when drilling. Cemented Carbide: The hinge hole opener is made of excellent cemented carbide, with high hardness, wear resistance and has long service life. Easy to Install: The hinge boring forstner drill bit has hex shank design which is more convenient and firm to hold, suitable for commonly used electric hand drills, lithium drills and bench drills, etc. Standard Sizes: The diameter of the boring drill bit is 35mm, the working depth is 12mm, which has accurate positioning and good stability. Wide Application: The hinge cup drilling hole saw cutter is suitable for drilling holes in wood, plastic and plywood, often used for hinge installation, model making and woodworking, etc. Specification: Item Type: Hinge Boring Bit Product Material: Cemented Carbide Drill Diameter: Approx. 35mm / 1.4in Working Depth: Approx. 12mm / 0.5in Shank Diameter: Approx. 10mm / 0.4in Overall Length: Approx. 89mm / 3.5in Applicable Machines: hand drill, lithium drill, bench drill and other models commonly used in the market Package List: 1 x Hinge Boring Bit Note: 1. Lithium electric drills need high power models above 48V, and hand electric drills need models above 600W. 2. Machine drill chucks can be used with a clamping range of 10MM and above. 3. For hole drills with a diameter greater than 55MM, please use a high power drilling rig or a bench drill. Package List 1 x Hinge Boring Bit