Material of castor wheelsThe casing is made of sturdy sheet steel, and the wheel is made of soil-friendly polymer PU. The mini transport wheels are super wear resistant. No scratches or wear caused by movement on the floor. Soft and Quiet]Small wheel casters are hard and durable. The swivel wheels are supplemented with a thickened plate, which provides smooth, safe and quiet transportation of furniture on laminate floors and carpets. Solid rubber wheel sizeCastor diameter: 25mm, total height: 28mm, mounting plate: 42mm x 19mm, screw holes: 4mm. The package includes: 8 white furniture caster wheels + 16 screws, Load capacity: 40 kg. Sliding castersMini casters have fatigue resistance, crack resistance and other characteristics. The swivel wheels have a rivet joint to prevent them from falling off. Non-toxic, odorless, safe, eco-friendly and long service life. Wide ApplicationFurniture castors small ideal for drawers, chairs, wheelbarrows, toolboxes, furniture, luggage , etc. Mini rubber casters for small furniture can be used in households, shops, schools and hospitals.