what is the footprint on those? i have jackstands ranging from 3 tons to 12 tons, and the footprint on yours looks small. without square pyramid sides, they seem unstable to me. what keeps the block in the saddle once lifted? is there a pin on the bottom like 4x4 truck lift blocks.
Last edited by surlynkid; 05-20-2012 at 02:10 PM.