Descriptions: 2-inch diameter twin bearings with soft roll PU wheel surface, no marking on carpets or any kind of natural and engineered wood floor, tile floor and all other floors. Features: The wheel is made of high-quality PU and nylon material, it has good properties of high strength, stable performance and fine workmanship, eco-friendly, safe and durable. With smooth surface, wear-resistant, and it won't scratch floors in your home or office. Easy to install with the mounting circlip and holes, no need any special tools or mounting experience. 2inch wheel, it has a load bearing up to 40kg, sturdy and strong. Rotating flexibly and quietly, can be perfectly used for office chairs, trolley, electronic logistics facilities, home chairs, sofa and other furniture. Specifications: Material: PU + Steel + Nylon Color: Black Wheel Diameter: Approx. 50mm / 2inch Mounting Height: Approx. 60mm / 2.36inch Stem Diameter: 11mm / 0.43inch Stem Height: 22mm / 0.87inch Total Length: 84.5mm / 3.33inch Max Load of Each Wheel: 40kg Quantity: 5Pcs Weight: Approx. 507g Package Included: 5 x Swivel Casters Note: 1. Please allow small error due to manual measurement. Thanks for your understanding. 2. Only swivel casters, the chairs are NOT included. 1、The wheel is made of high-quality PU and nylon material, it has good properties of high strength, stable performance and fine workmanship, eco-friendly, safe and durable 2、With smooth surface, wear-resistant, and it won't scratch floors in your home or office 3、Easy to install with the mounting circlip and holes, no need any special tools or mounting experience 4、2inch wheel, it has a load bearing up to 40kg, sturdy and strong 5、Rotating flexibly and quietly, can be perfectly used for office chairs, trolley, electronic logistics facilities, home chairs, sofa and other furniture