Ball Bearing 105C3

This is a genuine OEM replacement part used on Shimano reels. This part is made out of metal and it is sold individually. Ball bearings are used to reduce friction between rotating parts. The balls or rollers take the load and spin, distributing the weight evenly while the minimal contact area of the ball reduces friction. Bearings experience constant wear from pressure, heat, vibration and friction. Because of this, many bearings need to be periodically replacement. To replace this bearing you would need a screwdriver. First you would need to disconnect the reel handle. Then remove the side cover by loosening the screws that hold it. You should be able to remove the old bearing. Install new bearing and reassemble the reel