These dies are to be used with hand hydraulic punching tool.
Set 22 to 60mm includes 22mm, 27.5mm, 34mm, 43mm, 49mm and 60mm
Set 16 to 51mm includes 16mm, 20mm, 26.2mm, 32.6mm, 39mm and 51mm
Draw bar thread:
Set 22 -60MM: thread size 20*1.5mm.
Set 16 -51MM: thread size 10*1mm.