This Animation shows a "Series 300" Locking Half Part no 3002210 Mating with a "Series 300" Male Part no 3002204. This Range of Plugs and Sockets are often referred to as "Cowbell's ". They are used on Lorries to link the Tractor Unit to the Trailer where a Tail Lift is fitted as a power take off Lead. They can be supplied with Solder or Crimp Contacts. Please note the Yellow sleeves are no longer available.