Specifications: Product Name: Concealed Hinge Hole Jig Material: Hard Alloy, Carbon Steel Cutting diameter: 35mm Round handle diameter: 8mm Shank length: 27mm Overall length: 78mm Feature: [Sturdy Material] Adopting hard alloy and carbon steel material, this concealed hinge hole jig is sturdy and can be used with standard 35mm concealed hinges. [Easy to Use] This product has a V locator, which is convenient for finding the position and quickly locating the center point. The reliable quality can be used for a long time. [Widely Use] The package includes 1 drill bit and 1 drilling jig. This concealed hinge jig kit is suitable for different kinds of drills and is convenient to use. Parts List: A 1 X Drill Bit 1 X Drilling Jig OR B 1 x Hinge Locator 1 x Hex Wrench 1 x Drill Bit