6405/POM is an insulation piercing clip with steel spring and brass jack. The contacts features insulated wires without cutting or stripping insulation. The spring loaded double V-clamp holds wire centred for piercing needle. This clip featured with pierces insulation on wires from 22 to 14AWG. Tiny hole left in insulation can easily be sealed with standard 4mm banana plug test leads with or without safety shroud.