Features Anti-rust material - Bracket shell is made of iron plate and the surface is galvanized to prevent rust. Easy to move - Universal casters can be moved in multiple directions, allowing the casters to rotate 360 ​​degrees under load. Strong bearing capacity - Maximum load of each caster is: 10kg, the smaller the total load capacity, the better, to increase the service life. Widely used - Universal casters can be used for a variety of purposes, such as on desks, chairs, small carts, luggage, etc. Premium material - Wheels are made of white polypropylene for wear, shock absorption and noise reduction. Features: Anti-rust material - Bracket shell is made of iron plate and the surface is galvanized to prevent rust. Easy to move - Universal casters can be moved in multiple directions, allowing the casters to rotate 360 ​​degrees under load. Strong bearing capacity - Maximum load of each caster is: 10kg, the smaller the total load capacity, the better, to increase the service life. Widely used - Universal casters can be used for a variety of purposes, such as on desks, chairs, small carts, luggage, etc. Premium material - Wheels are made of white polypropylene for wear, shock absorption and noise reduction. Specifications: Material: Polypropylene, zinc-plated iron Type: Swivel Wheel Diameter: 25mm / 1" Mounting Height: 35mm / 1.37" Wheel Thickness: 1m / 0.51" Mounting Hole Diameter: 4mm / 0.15" Mounting Hole Pitch: 30 x 24mm / 1.18 x 0.94" Wheel Color: White Max. Load: 10kg each Quantity: 4 Package Includes: 4 x Casters Package List