For General use: NON-Abrasive material up top 900N/mm2 in unalloyed and low alloyed steel for through and blind holes.
For Thread Cutting by hand or machine
Picture shows taps as an example
of type and are not necessarily to size.
Tap set of three leads Taper Second and Plug.
Overall Length 69mm
Taps are HSS-G Tolerance 2B
Made in Germany by Volkel