1/4"-28 UNF Rubinetto e Stampo Set Sinistro, 1/4 x 28 UNF Rubinetto Filettato e Dado Rotondo
1/4"-28 UNF Left Hand Tap and Die Set. Straight flute design, made of 6542 high speed steel. It is used to process threads of various through holes or shallow blind holes, and blind holes cannot be processed.