623ZZ Fishing Reel Bearing Fishing Reel 3mm x 10mm x4mm Sealed Ball Bearings Fishing Reel 623ZZ Bearing, categorized as regular section, metal shielded, radial and deep groove ball bearings,623ZZ bearing is made of stainless Steel with stainless Steel balls and steel cage, 623ZZ bearing is closed with metal shields to protect the bearing from dust or any possible contamination,623ZZ bearing is shielded and self lubricated,the 623ZZ inner diameter is 3mm, the 623ZZ outer diameter is 10mm and the 623ZZ width is 4mm, the quality is set to EMQ (electric motor quality) to ensure high speed,623ZZ bearing is lubricated with grease and can be used in fishing reels.