1.either made from high quality carbon steel or equality better materials
2.self feeding screw point provides fast boring in hard and soft woods, for precise and easy drilling.
3.single spur cutting edge make the rapid chip c;earance,producing a faster ,cleaner hole
4.solid center design provides extra rigidity and power while boring
5.single flute have accurately ground and excellent chip carrying capacity
6.wide lands keep the bit straight as it bores through the hole
7.hex shank reduce slippage from chuck