Strut channel is used to mount, brace, support, and connect lightweight structural loads in building construction. These include pipes, electrical and data wire, mechanical systems such as ventilation, air conditioning, and other mechanical systems. Objects can be attached to the strut channel with a bolt, threaded into a channel nut, that may have a spring to ease installation. Circular objects such as pipes or cables may be attached with straps that have a shaped end to be retained by the channel. Strut channel is also used for other applications that require a strong framework, such as workbenches, shelving systems, equipment racks, etc. Specially made sockets are available to tighten nuts, bolts, etc. inside the channel, as normal sockets are unable to fit through the opening.