Ruko Terrax Die DIN 22568 Ground M4

Set made from 100 % high-alloy, high-speed tool steel (HSS). For metric thread M4 x 0.7 mm according to DIN ISO 13 Single-cut taps. To cut an external thread, the material being cut must already have a nominal diameter equal to that of the desired thread. Use the thread-cutting die to turn it until the desired thread length is achieved., Manufacturer: Ruko