TIPS: * 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;
USAGE SUGGESTION: Please choose the sutiable size depend on the wood's hardness level: * If the wood is a soft one, choose relative one size smller; * If the wood is a hard one, choose the corresponding size or relative one size larger.
PACKAGE LIST: 8 x Centering Drill Bits 1 x L Wrench 1 x Plastic Case