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 LD45 foam in fill.
Tapping Drill Sizes UNF. 5.5mm, 6.9mm, 8.5mm, 9.9mm, 11.5mmTapping Drill Sizes UNC. 5.1mm, 6.6mm, 8.0mm, 9.4mm, 10.8mmTapping Drill Size NPT. 8.7mm
Drills are loose with the set.
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