"The JET 5-Ton, 230/460V Electric Trolley can lift up to a 10,000-lb. load. Mounts to fit 5in. to 7in. I-beam and beam flange widths. Capacity lbs. 10,000, Travel Speed ft. per min. 39 1/3, Power Source 230/460v, OSHA Approved Yes, Product Type Trolley, Phase Three phase, Material Type Steel, Includes Solenoid operated traveling brake, Adjustable Yes, Finish Type Powder-coat, Flange Width in. 5-7. Designed to give single control convenience Features 230/460V, 3 phase wiring specify voltage when ordering Solenoid operated traveling brake Adjustable to fit 5in. min. to 7in. max. I-beam and beam flange widths 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"