This is a set of hinge drill bits. Made of HSS material, it is durable and practical. for Wooden planks, Fiberboard, Particle board, Plywood, Plastic, etc. Suitable for DIY, Home and General Building, Engineering Using. Features -Color: Assorted Color -Material:High-speed steel - Dimensions: 5/64 ", 7/64", 9/64 ", 11/64", 13/64 ", 5 mm, 1/4" - It is a set of professional drilling tools, applicable to the installation of the door hinge. - Drill bit for precise positioning, Accurate drilling of exact pilot holes in cabinet door hinges, door butts, handles, drawer slides, and more. - Applicable replacement for the installation of the door hinge. - 7 sizes used replacement for carpenters, cabinet, furniture makers, and other woodworking trades. - High hardness, durable and drilling performance. Specifications - 5/64'': Hole diameter is about 2 mm, Use about 2.2 - 2.8 mm tapping screw. - 7/64'':Hole diameter is about 2.8 mm, Use about 3 - 3.5 mm tapping screw. - 9/64'':Hole diameter is about 3.5mm, Use about 4 - 4.5 mm tapping screw. - 11/64'':Hole diameter is about 4.5mm, Use about 5 - 5.5 mm tapping screw. - 5mm: Hole diameter is about 5mm, Use about 5.5 - 6 mm tapping screw. - 1/4" : Hole diameter is about 6.35mm, Use about 7 - 7.5 mm tapping screw. Package list: 14 x drill bits 2 x wrench