Model 99TP - Transports pipes and bars. Capacity - 4,000 lb., evenly distributed. Product Features: All welded construction, except casters. Durable 12 gauge steel platform, and 12 gauge caster mounts for long lasting use. Bolt on casters for easy replacement or upgrade. Casters are 2 rigid, 2 swivel superior cart tracking. Overall height is 59". 4" channel uprights, 1-1/2" square tube arms. 3 load levels. Platform height is 11". Usable arm spacing (horizontal) - each side: Top - 6-1/2", Middle - 9-1/2", Bottom - 14-1/2". Standard color: Gray.....1940, 1944