AMPLIMITE Ferrules For D-Sub Connector Shielding Hardware Kits, Series HDP-20, HDP-22 and HDE-20AMPLIMITE ferrules for use with HDP-20, HDP-22 and HDE-20 D-Sub connector shielding hardware kits. These ferrules are made from tin plated annealed steel with a shell size of 1-3 and have a 'stepped' style apart from stock number 717-4669 which has a 'straight' style. The size of the ferrule being chosen depends on the diameter of the cable (please see table).For crimp tools see stock numbers 301-8278 and 301-8262TE Connectivity AMPLIMITE D-Subminiature Connectors