This is the most common size bearing in all reel applications from every manufacturer. Chances are, your reel has one of these in it! Most bait casting reels will use this size bearing either alone or in combination with another size. This includes most brands. Note: Hyper performance 3x10x4 sizing was the "Original" Spool Hi-Speed Bearing on which the company was founded. This size fits just about ALL Shimano reels.
Contains: (2) 3x10x4 Ceramic Spool Speed Bearings