Features Low starting and rolling resistance, quiet and smooth rolling, high toughness, shock absorption. The 360-degree swivel allows the casters to move flexibly in different directions. The wheels have good wear resistance and won't scratch the floor. Suitable for all kinds of trolleys, furniture, dining carts, office chairs, etc. 100% brand new product, all refund if unsatisfied If you have any questions, please contact our professional customer service team. Features: -Low starting and rolling resistance, quiet and smooth rolling, high toughness, shock absorption. -The 360-degree swivel allows the casters to move flexibly in different directions. -The wheels have good wear resistance and won't scratch the floor. -Suitable for all kinds of trolleys, furniture, dining carts, office chairs, etc. -100% brand new product, all refund if unsatisfied If you have any questions, please contact our professional customer service team. Specification: Material: PP + Metal Quantity: 4pcs Product Size: 4*4*5.5cm / 1.57*1.57*2.17in Weight: 230g (approx.)   Package List: 4 * Casters Package List