Onepiece hybrid ceramic bearing (ABEC7) designed for precision, low friction performance in small rotating assemblies. The title references S698C and S687C models; please verify the exact model/size when ordering. Key benefits Lower friction and higher speed: Si3N4 ceramic balls reduce rolling resistance versus allsteel bearings, improving spool responsiveness and smoothness in reels and other small machines. Improved corrosion resistance and durability: Ceramic balls plus sealed design reduce corrosion and contamination, extending usable life in wet or dirty environments. Precision and consistency: ABEC7 tolerance rating delivers consistent rotation and tight running accuracy for sensitive applications. Main attributes Construction: Hybrid ceramic (Si3N4 ceramic balls with steel races) Precision: ABEC7 Seal/shield options noted in title: 2OS, RS, 2RS (doublesided sealing/shielding variants referenced) Models and sizes referenced in title: S698C2OS — 8 x 19 x 6 mm (compatible references: 698, S698, SMR698, SMR698C) S687C2OS — 7 x 14 x 5 mm Quantity: 1 piece (1Pcs) Typical marking/compatibility: 698 / S698 / SMR698 / SMR698C / RS / 2RS as listed Performance and fit speed capable and stable under light to moderate loads typical for fishing reels and small precision mechanisms. Robust sealing options (2OS/RS/2RS as indicated) help keep lubricant in and contaminants out for smoother, longerlasting operation. Direct dimensional replacements: 8x19x6 mm or 7x14x5 mm for the respective model numbers listed. Use cases / applications Fishing reels: Ideal for replacing worn spool or pinion bearings in spinning and baitcasting reels for smoother retrieves and longer service life. Small electric motors and precision gearboxes: Suitable where compact, precision bearings are required to reduce noise and improve efficiency. RC and hobby equipment: Suitable for shafts and rotating parts that benefit from lower friction and higher running accuracy. Notes for buyers Confirm the required model and size before (S698C2OS 8x19x6 mm or S687C2OS 7x14x5 mm) to ensure proper fit. These are hybrid ceramic bearings with Si3N4 balls; installation and lubrication practices should follow manufacturer recommendations for performance.