Features 1Motorgrade bearings are used, the volume is small but with good performance. 2The outside of the wheel is made of POM material, strong and durable, has a long service life. 3Great workmanship, high heat resistance, bending strength and fatigue resistance strength. 4Can be used for a long time in the temperature range of -40-100, which is very practical. 5The wear resistance and self-lubricating properties of wheels are superior to most engineering plastics. Specification Item Type: Idler Large Wheel Large Wheel Bearing: 625 Inner Hole Diameter: Approx. 5mm / 0.2in Package List 10 x Idler Large WheelNote: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.