Feature:1. 1.5 inch nylon directional casters. For small flat car, product supporting wheel2. Roller surface is anti-skid designed, high safety, more stable.3. Easy to install, simple and convenient operation.4. The nylon wheel made of polypropylene material is durable and has a long service life.5. Good bearing capacity, Maximum Load 40kg, flexible and stable moving.Specification:Item Type: Nylon WheelProduct Material: PolypropyleneSteering: Directional castersDiameter: Approx. 37mm / 1.5inMaximum Load: 40 (kg)Installation Height: Approx. 37mm / 1.5inBearing: NoneWheel Width: Approx. 24mm / 0.9inWheel Thickness: Approx. 22mm / 0.9inUses: Small flat car, product matching wheels..Package List:10 xNylon WheelNote:Due to manual measurement, there is a slight error, thank you for your understanding.