Hold-down mounting system

Hold-down mounting system for G series stringing machines:

Which stringing machines have this hold-down mounting system?

Vendor Stringing Machine Models
Guterman (NRC Sports): AG 602S, AG 603S Deluxe and AG 604S Deluxe
Eagnas: GA, GA II, GA III, GB, GB II, GB III, GC, GC II and GC III