"Heavy-duty welded steel construction with precision-tapered bearing for jib boom rotation. Full 360 rotation for use in most applications. Painted blue finish. Complies with OSHA, ANSI and CMAA specifications. Trolley and hoist not included. NOTE Customer must ensure unit is properly installed and floor strength is adequate to support job crane usage. I-Beam H x W in. 4 x 6. Fixed height floor mounted jib adapts well to many applications Full 360 rotation allows personnel to completely utilize their workstation Solid steel construction will assist workers in lifting awkward material 80 in. overall I-beam length with a usable length of 70 in. Requires reinforced concrete pad for installation Hoist and trolley sold separately"