1.Made of 45#/65# carbon steel for various woods drilling at 6times faster than standard flat bits or its 3-flute counterparts.
2.Four flute auger bits with 1/4" hex shank, spray painted slot 3.Full screw tip for ease of use and pull through. 4.Cutting Spurs for clean holes with minimal 'break out'. 5.4-flute Design for faster chip ejection. 6.Tapered Flute for less binding and ease of use. 7.Full Length Heat Treat for extra durability. 8.he color in the spiral flute can be upon customer's special requests to be different.