This is a Nitro Engine Front Ceramic bearing sized 7x19x6mm (MR607EC-2RS). This bearing comes with PTFE Heat Resistant Rubber Seal. Ceramic balls are lighter for less centrifugal force allowing motors to spin at a higher RPM and also to accelerate faster.Plaig Bearings are a stronger, more reliable bearing with greater heat resistance and superior life to the standard factory bearings. We stock all other sizes of bearings for RC Cars and also sell Complete Bearing Kits for many popular brands of vehicles. If you can’t find the correct bearing by size or part number please Contact Us . Click here for Detailed Bearing Specifications