Metric Tap, Carbon Steel, 4mm x 0.70

4 mm x 0.70, metric 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 drill bit 30 or 1/8".