The step drill bit is made from high-speed steel which has high hardness and good wear resistance. The surface of titanium step drill bit set is coated with titanium which has better anti-rust performance.
The step drill bit is made from high-speed steel which has high hardness and good wear resistance. The surface of titanium step drill bit set is coated with titanium which has better anti-rust performance.
Milwaukee 48-89-9201, 1 Step Drill Bit, 1/8 Inch - 1/2 Inch by 1/32 Inch with the Rapid Strike tip that allows for fast, accurate starts that generate less heat, resulting in longer bit tip life.