`- Premium quality Cerbec USA Grade 3 ceramic (Silicon Nitride: Si3N4) balls with Magnetite rust proof finished races \n- Silicone VV seals\n- Ceramic bearings provide superior smoothness, reduced weight and extended bearing life\n- Kit includes all of the parts to change out outboard BB bearings \n- Suggested for use with AB-9010 (outboard BB bearing replacement tool) \n- 3rd party web sales (eBay, Amazon, etc.) are strictly prohibited by the manufacturer