Made of super-tough carbon tool steel to exacting specifications, heat treated and tempered. Furnished in right hand threads with most sizes coming in special bright, hard chrome finish. Rust- resistant tarnish. 1-1/2 threads chamfered, use after threads have been started for tapping to bottom of hole. With size drill to use permanently on every tap.
- FRACTIONAL SIZE
- Carded
- Size=1/4-20NC
