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Four Flute Wood Auger Bit

This patented self-feeding four-flute wood auger bit is our leading product,which has some extraordinary advantages as follows:
*Made of #65 high carbon steel (SAE1065 steel) for various woods drilling at 6 times faster than standard flat bits or its 3-flute counterparts.
*Full screw tip for ease of use and pull through. 
*Cutting Spurs for clean holes with minimal 'break out'.
*4-flute Design for faster chip removing.
*Tapered Flute for less binding and ease of using.
*Full Length Heat Treatment for extra durability.
*1/4"Quick Change Shank for quick change adapter and connector system.
*The color in the spiral flute can be changed according to customers' special requests. 

Part No	Metric	Imperial
GS-S12010	10mm	3/8”
GS-S12011	11mm	7/16”
GS-S12012	12mm	15/32”
GS-S12013	13mm	1/2”
GS-S12014	14mm	9/16”
GS-S12015	15mm	19/32”
GS-S12016	16mm	5/8”
GS-S12018	18mm	11/16”
GS-S12019	19mm	3/4”
GS-S12020	20mm	25/32”
GS-S12021	21mm	13/16”
GS-S12022	22mm	7/8”
GS-S12024	24mm	15/16”
GS-S12025	25mm	1”
GS-S12026	26mm	1-1/32”
GS-S12028	28mm	1-1/8”
GS-S12030	30mm	1-3/16”
GS-S12032	32mm	1-1/4”
GS-S12034	34mm	1-11/32”
GS-S12035	35mm	1-3?8”
GS-S12036	36mm	1-13/32”
GS-S12038	38mm	1-1/2”
GS-S12040	40mm	1-9/16”