Fractional Tap, National Fine Thread, 9/16-In. x 18 Cutters No other cartridges are certified

No other cartridges are certified to be fitted with this mask

Exclusive Quick Clamp Blade Change Allows For Tool Free Blade Changes

1/4" hex shank fits most power tools and quick-change chuck adapters

oversized blade body for fast chip removal in extreme cutting applications

Patented jaw design is compatible with all 1/4" hex shank accessories including insert bits

Fractional Tap, National Fine Thread, 9/16-In. x 18 Cutters No other cartridges are certified9 16" x 18, national fine thread, fractional tap, carbon steel, ideal for routine maintenance, repair work & for rethreading where high accuracy & tolerance thread is not critical, straight flutes are ground to provide rapid chip removal for efficient threading, designed for hand threading work in a variety of materials taps produce a class 2b thread, use 33 64" drill bit.