Feature high speed steel construction and steam oxide coating. Patented design two cutting flutes allow for clean burr-free holes. Cust through materials faster than standard bits. Eliminates the problem of tip breakage on standard drill bits.
From the Manufacturer
The LENOX 30883-VB3 Vari-Bit Step Drill Bit - 1/4" - 3/4" has a patented two flute design which cuts fast, clean, round holes that are accurate and burr-free. The enhanced flute design also removes chips rapidly to ensure longer tool life. The split point on the tip of the Vari-Bit is designed for faster penetration and prevents walking. The steam oxide coating adds to the durability of the Vari-Bit Step Drill Bit.