Self Centering Drill Bits Set for Hinges, Center Drill Bits VIX Bit Set with Black Plastic Storage Case for Wood Woodworking Door Window Cabinet Hinge Total 9 PCS (Silver)

User Guide: * Choose a sutiable size drill bit depend on the woods' hardness level: - If the wood is a soft one, choose a relatively one size smller drill bit; - If the wood is a hard one, choose an exact size or a relatively one size larger drill bit; * Choose a Sutiable Size Drill Bit Depend on the Diameter of the Screw: - 5/64" bit can drill a hole(hole diameter is 2mm) for screws whose diameter is 2.2-2.8mm; - 7/64" bit can drill a hole(hole diameter is 2.8mm) for screws whose diameter is 3-3.5mm; - 9/64" bit can drill a hole(hole diameter is 3.5mm) for screws whose diameter is 4-4.5mm; - 11/64" bit can drill a hole(hole diameter is 4.5mm) for screws whose diameter is 5-5.5mm; - 5mm bit can drill a hole(hole diameter is 5mm) for screws whose diameter is 5.5-6mm; - 13/64" bit can drill a hole(hole diameter is 5.2mm) for screws whose diameter is 6-6.5mm; - 1/4" bit can drill a hole(hole diameter is 6.35mm) for screws whose diameter is 7-7.5mm; * What if the drill bit get stucked: - If the drill bit get stuck and jammed after drilling and you are not able to pull it out, use the mini hex wrench to disassemble the drill bit into parts, then you can get the bit out. What You Will Get: 7 x Self Centering Drill Bits 1 x Mini Hex Wrench 1 x Black Plastic Storage Case

• FEATURE: Self centering function enhances accuracy and efficiency. The 2 holes design on the head of brass shell made sawdust discharged faster
• SIZE: 5/64", 7/64", 9/64", 11/64", 5mm, 13/64", 1/4", total 7 PCS self-centering hinge drill bits, all are 1/4" hex shank; an extra mini hex key wrench is included
• MATERIAL: Made of high speed steel; heat treated twice, which made bits harder and had excellent wear resistance
• IMPORTANT: Choose a low drill speed (2000R/min - 3000R/min is suggested)when drilling; If the speed is too fast, drill bit may fail to self centering, even get snapped or stucked
• WIDE USAGE: Ideal for woodworking; installing hinges for door, window, cabinet, etc