Product Information
- Colour: silver
- Material: metal
- Size: 4 x 12 x 4MM(Inner Diameter x Outer Diameter x Thickness)
- model: 604 ZZ
- Bearings reduce friction by providing smooth metal balls or rollers and a smooth inner and outer metal surface for the balls to roll against.These balls or rollers "bear" the load, allowing the device to spin smoothly.

















