I bought the Harbor Freight 1 ton on sale for $98.00 to move small blocks around. Built if Friday comes with really heavy duty bolts. As pictured above, The top beam now comes with an add support bridge and the unit comes with 6 casters instead of 4. Sat I loaded a 5.0 into a pickup truck with no effort. I was on smooth concrete and it seamed stable to me. I think I could lift heavier. I had not thought about the extra weight of big blocks.