Feature: 1. Stable and Low Noise: The omni directional wheel is made of durable materials and has a firm structure. The friction of the wheel is large, and the wheel can be kept stable during operation with low noise. 2. Omni Directional: The omni directional wheel can move and rotate in all directions, and has rotational and lateral maneuverability, making it easy to control and track direction, making steering faster than normal wheels. 3. Rolling Bearings: Each driven wheel is embedded with two rolling bearings. With accurate machining and controlling, the clearance of the driven wheel shaft is within a small range, which especially suitable for various small robots. 4. 12 Rubber Rollers: Each omni directional wheel consists of 12 rubber rollers. The load capacity reaches 45KG. Each omni directional wheel is independently powered for better stability. 5. Multiple Movement Trajectories: The wheel can realize forward, traverse, oblique, rotate and its combinations, stroke and rotation at any angle with zero radius. Specification: Item Type: Omni Directional Wheel Material: Aluminum alloy, polyurethane Weight: Approx. 1194g/42.1oz Size: Wheel Diameter: 127mm/5.00in Wheel Width: 51mm/2.01in Product Type: RC accessories Number of Rollers: 12 Number of Plates: 2 Load Capacity: 45KG Application: Suitable for the drive of various small robots 14198. Package List: 2 x Omni Directional Wheel6 x Screw Note: 1. Due to manual measurement, 1‑3mm error is allowed, thank you! 2. Due to the differences between different monitors, the picture may not reflect the actual color of the item.3. The biggest difference between this model and the 127mm light loag Mecanum wheel 14193 is that 14193 with bearings and 14198 with racing steel.