General description This set includes 8 ball bearings designed for the wheels of Polaris 280 and 180 robot pool cleaners, corresponding to part numbers C60 and C-60. The bearings feature a plastic body and stainless steel balls, ensuring optimal operation and extended service life. Technical specifications External diameter: 28 mm Internal diameter: 15 mm Installation Replacing the bearings on your Polaris robot is quick and easy, allowing for a DIY installation.