This Strongway Adjustable Gantry Crane is ideal for shops where lifting is an essential part of the business. This all-steel yet lightweight crane goes where forklifts can't. Adjustment range is 7ft. 11 1/2in. to 11ft. 10 7/10in. Distance between vertical beams is 7ft. 9in. Quick assembly and disassembly allow for easy transport within a jobsite or from site to site. Auto-lock feature keeps unit secure. Super-strong 4in. casters 2 locking with rubber roll smoothly and swivel 360. Gantry crane is NOT to be moved while loaded. Product Weight lbs. 246, Product Type Adjustable height gantry crane, Material Type Steel, I-Beam H x W in. 86 1/2 H, I-Beam to Ground in. 95 1/2-142 11/16, Crane L x W in. 94 1/2 x 47 1/4, Load Capacity lbs. 1,000, I-Beam Length ft. 7 15/16. All-steel construction Adjusts from 7ft. 11 1/2in. to 11ft. 10 7/10in. 7ft. 9in. between vertical beams Quick assembly and disassembly for easy transport Auto-lock to keep unit secure Relatively light weight crane goes where forklifts can't Super-strong 4in. swivel casters 2 locking with rubber for smooth rolling Do not move while loaded