Features: *Self Centering Hinge Hardware Drill Bit 7 specifications are optional *Made of high quality material, durable and practical to use. *Contains an L-shaped wrench *Precise Positioning: Drill bush for precise positioning, will not move. High speed steel body designed, durable, rustproof and excellent for use. *Sawdust Discharged from Hole: Sawdust will be automatically discharged from the top of the holes on both sides, without drill blocked. Never miss the center of the hole again, references from the hinge bevels. *Unique Design: Unique design and perfect punch effect. Applicable for the installation of the door hinge. Easy to use and install, change bits fast which -handed load and release. *The bits are surrounded by spring loaded guides that have a casement to show the drill bit depth while making adjustments. Specifications: Type: Hinge Drill Bit Material: High-speed steel Color: Silver (As Pictures Show) Size: 5/64'': Hole diameter is about 2mm, Use about 2.2 - 2.8mm tapping screw 7/64'': Hole diameter is about 2.8mm,Use about 3 - 3.5mm 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- 5.5mm tapping screw 13/64": Hole cutting diameter is about 5.2mm, for 6 6.5mm tapping screw. 1/4 inch: hole diameter is about 6.35mm, use about 7-7.5mm tapping screw 5mm: hole diameter is about 5mm, use about 5.5-6mm tapping screw Quantity: 2pcs Package Contents: 1*Hinge Drill Bit 1*Hex wrench Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.