Features:* * Brass and high speed steel, and excellent performance.* Perfectly center the remote control hole for hinges, drawer slides, handles, etc.* Sawdust will be automatically discharged from the top of the drill holes on both sides, not the stuck drill bit.* Unique design and excellent punching effect, suitable for door hinge installation.* Good tools for DIY woodwork or professional engineers. Specifications:* Material: Steel + Brass * Handle Diameter: 1/4" / 6.35mm * Handle Type: Hexagonal Handle * Color: Silver Tone * Holes Diameter 5/64": Hole Cutting Diameter is about 2mm, for 2.2 - 2.8mm Tapping Screw.7/64": Hole Cutting Diameter is about 2.8mm, for 3.0 - 3.5mm Tapping Screw.9/64": Hole Cutting Diameter is about 3.5mm, for 4.0 - 4.5mm Tapping Screw.11/64": The cutting diameter of the holes is about 4.5mm, for 5.0 - 5.5mm tapping screw.13/64": the cutting diameter of the holes is about 5.2mm, for 6 - 6.5mm tapping screw. Package contents:5 pcs. Self-Centering Drill Bits1pcs WrenchNote:1. The actual colors 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.