Insulation Piercing Connectors are used on all AB cable systems (messenger wire & supporting system) to take a tap connection. This tap can be used to continue the line, distribute the line, used in street lighting or in service connections to households. The design allows the connection to be completely sealed against any water ingress, thus acting as a waterproof connector. Materials: Body: Black High strength engineering-plastic used for the mechanical reliability of the connector. Contact Plates: Tinned Copper or Tinned Copper Alloy or Aluminium or Aluminium Alloy. Fasteners: Galvanised Steel. Shear Nut: Aluminium or Aluminium Zinc Alloy.