Constructed of 2"sq x 11 gauage steel tube with a powder coat finish. The bar height is adjustable from 30" to 66" in 3" increments. Bar rests held in place byspring loaded pull pins, and are urethane covered. We have increased base dimensions to 42½" x 48½" for increased stability and performance. This is the ultimate multipurpose rack for those who need flexibility in programming, and have limited space. 75"H x 49"W x 43"L.