Hello. I present to you the new concept of the SV BOOST spool. The main feature of this spool is that the side cover bearing is mounted stationary and motionless on the spool shaft. This model is equipped with "AIR TYPE" bearings. The spool has a diameter of 34 mm, therefore, it can be used in all Daiwa reels with a spool of this diameter and a bearing in the side cover of 3 * 10 * 4 mm.