The Marathon T-Adapter for Crank 3000 System is an integral part of the Truss 3000 SQ portable lighting system for temporarily mounting DJ lighting at an event. This T-adapter (in conjunction with another T-adapter and 2 Crank 3000 stands, not included) and the truss (not included) allows you to mount and raise your lights to a maximum of 18' (5.5 m). This system supports a maximum weight of 550 lbs (249.5 kg).