Feature 1360 Degree Rotation: The 100mm/3.94in heavy duty dual aluminum omni directional wheel is a rugged, double row wheel that moves easily through 360 degrees with swivel and lateral maneuverability. 2Practical Accessories: Use the omni directional wheel, which can keep your balance ball robot running smoothly or set up a complete power transmission system. 3Widely Used: Each roller of the omni wheel can travel independently, and the omni wheel is used for robots, carts, conveyors, carriers, luggage, etc. 4Fine Craftsmanship: Double omni wheel uses a variety of high fine machining techniques and combines, wire cutting, stamping processing, etc. 5Aluminum Alloy Material: The body of 100mm/3.94in omni directional wheel is made of premium aluminum alloy, which is strong and durable, corrosion resistant and has a long service life.SpecificationItem Type:OmniDirectionalWheelMain Body Material: Aluminum AlloyRoller Material: PolyurethaneSize:Diameter: Approx. 100mm/3.94inWidth: Approx. 66mm/2.60inAperture: Approx. 12mm/0.47inNumber of Aluminum Plates: 2Number of Steel Plates: 6Roller Bearing: Bearing RollerLoad Capacity: Approx. 80kg/176.4lb/pcSuitable for Robots, Trolleys, Conveyors, Carriers, Luggage, Etc. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x OmniDirectionalWheelNote1. Due to manual measurement, 1‑3mm/0.04‑0.12in error is allowed, thank you!2. The picture may not reflect the actual color of the item due to differences between different monitors.