24pc set containing 1 second tap & 1 die per size together with holder & wrench, Case is made from industrial injection moulded Polypropylene and has Plastazote LD29 foam in fill.
UNC - 1/4 - 5/16 - 3/8 - 7/16 - 1/2
UNF - 1/4 - 5/16 - 3/8 - 7/16 - 1/2
NPT - 1/8 x 27