Burkit 1/4"-28 UNF Tap and Die Set Left Hand, 1/4 x 28 Machine Thread...
Burkit 1/4"-28 UNF Tap and Die Set Left Hand, 1/4 x 28 UNF Machine Thread Tap and Round Die. Technology: Straight fluted design, fast chip removal, and no blocking make your threads machining faster and easier.