- Used by some of the largest manufactureres in the US. Industrial quality.
- 58-60 HRC (Rockewll Hardness)
- S2 material
- Core hardened for increased hardness
- Black Manganese phosphate coating for extended life
Our bits are hardened and thoroughly tested to do the job well and last. The screw bits have a Rockwell Hardness Rating (HRC) of 58~62. When compared to average store-bought bits, you will enjoy less stripping, tighter/more accurate fit in screw and longer life.