Featuers: For use on solid barrel type (screw machine) contacts used in RS232 style connectors. High quality crimping standard ensures repetitive, reliable crimping action Specification: MaterialHRCHandleApplicationOAL. SPCC+Carbon steel 45°±3° PVC Crimping of closed-barrel RS-232 D-sub contacts AWG 20-12 / DIN 0.5~4.0mm² JIS