Features: Each rubber swivel wheel can hold 8kg/17.6lb load; Roll quietly and smoothly. Application: Use for small machines, trolleys, furniture, merchandise shelves, etc., and safe on carpet, concrete, tile, wooden surfaces. Size: 1 inch diameter fixed swivel wheels; Overall size: 1.6x0.7x1.1 inch (LxWxH) Sturdy and good strength, and premium quality. Color: Silver Material: Metal + TPE Size: 42mm Package Contents: 40 x Wheels Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.