Heavy duty connectors which protect against the weather, dirt & high temperatures. Connectors have a locking mechanism to prevent the wires and terminals vibrating free. Once cable has been crimped onto the terminal, push the terminal through the back of the connector until you hear a 'click'. Turn the connector around and insert the wedge lock plate until you hear the 'click again which will give a secondary securing lock for the terminals. The pin terminals are inserted into the connector receptacles & the socket pin terminals are used on the connector plugs. For a professional crimp please use our Laser Part No 7533. Industry standard size 16. A British company based in Warwickshire, United Kingdom. Connect Workshop Consumables draws on years of experience to introduce quality products which offer real value for money. All our products are responsibly sourced from trusted ethical partners across the world.Our years of experience and vast expertise in the automotive sector helps us achieve our aim of bringing high quality consumables solutions and being No.1 choice for many professional mechanics.