Top Quality Name Brand (CM) New fully adjustable width from 4-1/4" wide I Beam to 9" wide. Capacity 2 tons or 4000 Lbs We have 2 of these if you want both. The 3" diameter solid wheels can handle a flat bottom I-Beam ,or a tapered style. The best price we could find on this CBTP0200 model is $328.00+Tax + Shipping= $400.00 ..If you are building some kind of a Jib Crane Gantry Crane or Bridge Crane .Let's talk we have 2 Jib Cranes on site for you to look at for ideas on what you might want to build. Call and we can help you hopefully (952)854-5 seven eight six