Alright DIYers and workshop warriors, these TAYLOON heavy-duty caster wheels are absolute beasts that can handle some serious weight! We're talking about a set of four 5-inch casters that together can support up to 2400 pounds - that's 600 pounds per caster! The construction is seriously robust with thickened steel and high-quality polyethylene wheels that feature double ball bearings for super smooth movement. The double locking mechanism is what really sets these apart - when locked, both the swivel and the wheels are secured, so whatever you're moving stays exactly where you put it. The threaded stems are standard US size 1/2\-13 x 1\ (that's half-inch diameter with one-inch length), so they fit most industrial furniture and equipment. Installation is straightforward with the included locking nuts and wrench - just make sure you measure your existing stem size before ordering to ensure compatibility. The wheels roll silently and smoothly on hard surfaces, and the polyurethane construction means they won't mark up your floors. I've used these on everything from workshop carts to heavy furniture to equipment dollies, and they perform flawlessly every time. The quality is impressive for the price - they feel substantial and well-made, not like some of the cheaper casters that feel flimsy under load. If you need to move heavy items around your workshop, garage, or commercial space, these heavy-duty casters provide the reliability and weight capacity you need without breaking the bank. Seriously, they make moving heavy equipment feel almost effortless!