Ceramic Hybrid Special Stainless Saltwater Fishing Reel Kits. Ceramic Metal shielded Fishing Reel bearing kits are an upgrade replacement to stock fishing reel bearings. The new Special Stainless Saltwater Series AKA Boca Salt Series is a new type of bearing that utilizes a special form of stainless steel, different than the traditional 440C Stainless that is commonly used in fishing reel bearings. This special stainless steel lasts 2-3 times longer than traditional stainless steel. These bearings have SI3N4 ceramic balls with special stainless steel races, shields and retainers. The Metal shielded bearings are non-contact which allows the bearing to spin freely without any excess drag. Ceramic will never corrode, has less rolling resistance and is lighter than steel. As a result ceramic bearings last longer and cast longer. All Ceramic metal shielded fishing reel bearings are supplied Cleaned of Oil or Grease and Lube Dry LD.