Self-aligning Hex Die, National Coarse, 1/4-in X 20

1/4" x 20, national coarse, self aligning 1" hex die, carbon steel, performance threading system threads straight every turn, more steel at critical points for extra strength, ideal for routine maintenance, repair work & for rethreading, use with performance threading system die stock for best performance, die can also be used with a wrench or socket when space is limited, designed for hand threading work in a variety of materials.