I have also used a set of Harbor Freight
6 ton jack stands under my 2-ton 54/55 (Z-series) GMC COE with 25" flat bed. They had 100% stability.
They are much stronger and have a much wider and taller base (as would be expected) than the 3-ton HF stands that I have used regularly for many years on my 1/2 trucks.
For those of you who would like objective evaluations of jack stands, do not look here, check out the objective evaluations by
Optimus Prime, Megatron, Soundwave, Starscream, and Shockwave. (chuckle folks, chuckle)
I do not trust/mistrust those characters, but I trust my extensive personal experiences. BUT, I do not have an automatic xenophobic/sinophobic rejection of Chinese parts - I study the quality of the parts. Also, I guess that if the HF stands were so unsafe, HF would be broke from being sued by even a small percentage of the people injured by the failure of these stands (from the 1000s (10s of 1000s?) of people who have bought them).
If these stands were unsafe, you could bet that would be a lawyer's godsend.
By the way, Megatron sent me a PM to inform me that the highly rated ESCO stand is now made in China.
