This would easily be a home run product, if the roller head didn't swivel freely in the stand base. Hence only 3 stars for stability, as if the roller swivels 90 degrees in the base under load, you could have a Very Bad Day. The easiest fix for that I've come up with is to use a worm clamp to hold some 3/4\" x 3/4\" x 1/8\" steel angle to the base, and then use another worm clamp to hold the acme threaded rod to the angle. (It should be apparent that the legs of the angle should straddle the central tube of the base, as well as the acme threaded rod.) It doesn't take much to keep the head from swiveling, but it's important. That gripe aside (and you shouldn't dismiss it out of hand), these are extremely strong stands, and the tripod bases are extremely stable. These are just SO much stronger than those cheap stands that are made of thin square tubing and have pinch-type height adjustments, that there is just NO comparison. Yes, they cost 2x as much, and they are worth it if you are, for example, feeding heavy wood slabs into a drum sander or table saw. The pinch height adjustment stands just will NOT support heavy. One huge caveat here-- I just didn't trust the friction collar that enables you to raise the tube in the stand base, which is how Vevor claims the range of useful heights for these stands, under their claimed 2500# loads. Heck, I wouldn't trust that friction collar (and associated set screw) under 250# load. What I did (and it has worked perfectly under load) was to go to my local remnant steel vendor and buy 10' of 1.75\" OD x 1.5\" ID steel tubing, and cut it to various lengths such that each could just sit at the bottom of the stand, while providing bearing surfaces for the nut on the acme threaded tang of the roller head. Now I'm in Tall Cotton (as opposed to Deep Kimchee), able to support many hundreds of pounds of load at any height up to 72\" on a fully adjustable stand with 5 self-made tube inserts of different lengths (plus the one that
RAZOO1 
