Ruko Cutting Tap Set, 3 Pieces, M4 x 0.7mm, 1/4", HSS

HSS screw tap for metric standard thread. Thread is cut in three work operations (rough tap, second tap and third tap). For through-threads and bottoming threads. Cuts non-alloyed and low-alloy steels up to 800 N/mm² hardness, malleable cast iron and non-ferrous metals.