PORTER-CABLE Forstner Bit Set, 14-Piece (PC1014)

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

【Material】 High speed steel drill bit, covered by a brass shell, more durable and excellent for usage
【Self Centering】 Automatic centering bring more accuracy and efficiency; 2 holes design can discharge sawdust faster
【Various Sizes】 Total 8 bits: 5/64", 7/64", 9/64", 9/64", 11/64", 5mm, 13/64", 1/4"; all are 1/4" hex shank
【Attention】 Choose low speed when drilling (2000R/min - 3000R/min is good); If too fast, bit may fail to centering, get broken or jammed
【Usage】 perfect for woodworking, door, window, cabinet, hinges, drawer slides, etc
【Material】 High speed steel drill bit, covered by a brass shell, more durable and excellent for usage
【Self Centering】 Automatic centering bring more accuracy and efficiency; 2 holes design can discharge sawdust faster
【Various Sizes】 Total 8 bits: 5/64", 7/64", 9/64", 9/64", 11/64", 5mm, 13/64", 1/4"; all are 1/4" hex shank
【Attention】 Choose low speed when drilling (2000R/min - 3000R/min is good); If too fast, bit may fail to centering, get broken or jammed
【Usage】 perfect for woodworking, door, window, cabinet, hinges, drawer slides, etc

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