Features: Crafted from rubber materials, wear resistant and durability. Effectively reduce noise and frictions, and maintain indoor quietness and comfort. Strong load bearing capacity, stable and Enduring. You can easily and freely operate furniture. Seal bearing, low frictional resistance, highly temperature resistance, highly speed, low noise, dustproof, antistuck. The heavy duty rubber casters wheel can rotates 360 degrees very Smooth. It can widely used in various furniture, such as sofas, bed, tables, cabinets. Specifications: Materials: Rubber Styles: 4Pcs Universals Wheel/4Pcs Universals Wheel with Brake/2PCS Universals Wheel and 2PCS Universals Wheel with Brakes Wheel Thickness: about 1.5inch Clamp Plate Inner Width: about 18mm/0.70inch Other Size Are Shown in the Picture Package Includes: 4Pcs Universals Wheel/4Pcs Universals Wheel with Brake/2PCS Universals Wheel and 2PCS Universals Wheel with Brakes note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.