This Grey’s GX 500 or700 FLY REEL SPARE SPOOL is the perfect addition to your fishing gear. It is suitable for all freshwater fish species and has a maximum drag of 0.4 kg. The reel size is 6/7/8 and it has a gear ratio of 2.6:1. Please study the photos as they are part of the description the spool is has been used thank you.