
Irwin's Performance Threading System (PTS) - Innovative new tap & die drive tools include several time saving features
Taps feature new Chip Breaking Technology (CBT) - up to 30% easier to break chips
Dies feature more steel at critical points for additional strength
Sets comes broken down into individual tap, die, and drive tool modules that easily fit into any tool drawer
Includes Fractional Dies in sizes 4 to 1/2" in both NC (coarse) and NF(fine) thread pitches
