"The JET 5-Ton, 230/460V Electric Trolley can lift up to a 10,000-lb. load. Mounts to a variety of I-beams and wide flange beams. Works With Controller, Capacity lbs. 10,000. Designed to give single control convenience Features 230/460V, 3 phase wiring specify voltage when ordering Solenoid operated traveling brake Adjustable to fit various size I-beams and wide flange beams Must be fitted with a JET 4 station 24V push-button control sold separately Durable powder-coat finish Lug mount or hook pin Electronic trolley not supplied with a 4-button controller 28in.L x 19 1/2in.W x 16in.H"