Round Dies, DIN 223 (DIN EN 22568), HSS-G, UNEF 1.3/8 x 18 

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