C k tap die set 21 piece metric ck tools t4032 manufactured from hardened and tempered high carbon steel ideal for forming threads in soft materials or clearing damaged corroded threads set supplied in a convenient storage case and contains tap dies sizes 3x0 5 4x0 7 5x0 8 6x1 0 7x1 0 8x1 25 10x1 5 12x1 75mm 1 8 npt tap wrench die stock screwdriverck tools t4032 tap die set 21 piece metric