The swivel caster wheels uses high quality polyurethane material to absorb strong shocks and vibrations. Let the furniture wheels 4 pack carry more weight and slide easily, tests have shown that this material effectively protects the floor without scratching and extends the life of the outdoor casters.
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The lockable wheels rotating top plate is made from the same metal material as the wheel cover. In the event of an upgrading of the metal, it was thickened, which significantly increases the robustness, significantly improves the load-bearing capacity of the roller and is safer to use and strengthens the equipment.
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The brakes use a double-layered, multi-control setup, and when thehevey duty casters brakes are in the locked position, not only will the rollers not move, but the rotating top plate on top will also get stuck. Double-layer brake locking is more stable and safer than single-layer braking.
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