HOLKIE Leveling Stem Casters Set of 4 Heavy Duty Retractable Caster Wheels, 1/2" and M12 Stem Size, Total Capacity 2200 Lbs, Adjustable Wheel with Ratchet Handle for Workbench, Machine, Equipment

I have these casters on an adjustable frame bed, as the wheel kit from Tempurpedic is made of unobtanium and I was having a hard time moving the king size bed around on the rubber feet. I like these wheels came with 2 sets of threaded stems, 1/2 inch is what i needed for my older setup. Most of the newer adjustable frame beds have 6 legs and m8 fasteners, this one is only 4 sae 1/2" -13 thread bolts. I had the 12 inch legs which are now too high for comfortably getting in and out of bed, I used to keep storage under the bed but no longer need that, so these brought the bed height down to where the frame is 4.5 inch above the floor. This is the perfect height for sitting on the edge of the bed and easily getting in and out in the middle of the night. One feature i am pleased with on these wheels is the leveling feature, which acts to lock the wheel from rolling and it is easy to release if the bed needs to be moved. I had to buy 2 sets of these to work with the 2 bed platforms with 4 casters on each and had to rearrange the outer bed frame rails to be lower. It all worked out beautifully, and less than half the cost of trying to piece together random ebay sets that were over a hundred bucks each and didnt have the locking features, plus I could only find 1 set of 6 inch legs. If i need to I can fab up some extensions to bring the bed back up to its previous height, but i think it will be perfect as it is. There is room for the power adapters, mattress pumps, and even the Chili Pad Dock Pro fits under the foot of the bed with no issues. I also had room enough to store my CPAP UPS under there, though I don't really need a UPS anymore with the newer 24v system, a couple 12 batteries can power that thing all night without an inverter whining. I digress.TL/DR Good wheels, high load capacity, holds a 400 pound man on a 250# bed frame with a 60# mattress and about 10# cooling pad and 25# weighted blanket.

I purchased these casters to install a massive safe that need to be elevated off the floor. They are very sturdy and had no issue moving the safe across the floor and made leveling a snap.

WOW these things are awesome they allow me to move my 2000lb metal brake with ease. im not sure whats so confusing about these casters but they function just like the say. they come with both metric and and sae studs, follow the instructions and you will have no problems.

So these seemed great and well built. It’s nice that they come with two sets of bolts - on double sided with m12 and a us 1/2 in on other side and one just m12 all the way (and with a set of nuts for each). I discovered my application required a much longer rod (bottom of band saw that has a lip) and finding m12 1.75 bolt threaded rods proved a real time suck and not successful! Make sure the included bolt length works in your application…

These are a must have for heavy wood working machinery. They were very easy to install and operate on my heavy duty wood lathe.

Installed these on an old radial arm saw that weighs about 1000 pounds, so far they seem to work very well. I can move the saw around by myself, rolls easily. Especially nice that you can lower the pads so it is not always sitting on the wheels and you can level it.

I would have given it 5 stars if the tapped holes were deeperThe studs screw in 2 turns before getting tight. I locked double nuts for tightening the studs thinking the threads were tight but it ended up locking the swivel. Now the adjustment for the leveling pads is bent. Learn from my mistake

Nice, good quality leveling casters. Worth the extra $10.