Round Dies, DIN 223 (DIN EN 22568), HSS-G, UNF 1/4 x 28 

for general use - non abrasive material up to 800 N/mm² - unalloyed and low alloyed steel Thread type: Unified Fine thread ANSI B 1.1 Norm: DIN 223 (DIN EN 22568) Material: HSS-G