I purchased this Oct. 8, 2019 and I am quite happy with the product and its arrival. No complaints at all. I do not know if it will lift 6000#s, but I lifted a few hundred #s without any problem. Yes, the 4 wheels are steel with ball bearings.However, mine looks a bit different from what is pictured on the website, it is RED not yellow, but does say 3 TON on it as well has having Chinese symbols! It also arrived earlier than anticipated! It came in a long cardboard box with lots of extra tape on the ends to keep it from punching through the box. It is a heavy tool for a cardboard box, but it worked! I see someone else ask a about dimensions, so I measured things:Over all length: ~61", Handle (Pipe): 1.25" OD and 1" ID. Wheel base: ~5.25" (not the 6" shown in the add). Wheel diameters: 2.5". The lifting tongue: width: 1-7/8", depth from front edge to wheels: 1-5/8 at welding bead, but 1-7/8 to the stop block, thickness 3/16 at front edge tapering over 1 inch distance to 3/8 thickness, where the taper (wedge) is on the floor side of the tongue. The tongue is at an angle wrt the handle. Hence, the lift height would be determined by your application, but when the handle is lying on the floor, the height of the end of the tongue is 3" from the floor. So the max lift would be to ~3" from the floor.DL