4 Inch Heavy Duty Stem Caster Wheels with Brake, 3/8-16 x 1 Threaded Stem, TPR Soft Quiet Locking Wheel, Set of 4 Swivel Casters for Cart, Furniture and Shelving

Multiple Uses: 4 inch caster has a higher height, better ability to overcome obstacles. When working together with shelves, grills, furniture, carts, dollies, trucks, racks, etc., it will be smoother. Stem Size: Diameter is 3/8"(9.5mm), length is 1"(25mm). Each stem comes with a nut. Payload: The stem cannot withstand too much lateral tension when pushing the cart. If the cart needs to be moved frequently, it is best to keep the weight of the cart below 280 pounds. Quiet & Safe: The tires are made of thermoplastic rubber(TPR). So the wheels not only have the soft nature of rubber, quiet and safe for floors. But also have the hard characteristics of plastic, heavy duty and wear resistant. Smooth & Lock: Support 360 degree rotation, allowing the cart to be pushed at will. The lock on the wheel can only lock the rolling, not the swivel rotation. But when more than two wheels are locked, the cart will never move.