This Smart Socket kit includes a blank front lid that can be machined to take a custom connector of your choice. When using this Smart Socket be sure to check that there is enough space inside the Smart Socket for the connector you are going to use. All Smart Sockets are injection moulded in tough resilient ABS and comprise of 3 parts the body lid and clamp. Kits are shipped with all the necessary screws to assemble them along with full fitting instructions; to fit them you only need to drill a single 16mm hole in one wall of the tube. Then simply press the Smart Socket into place and tighten the 2 self tapping screws; you can then install the wiring for your lighting bar.