Genuine spool of Japan version 20 Metanium, 20% shallower spool than export version 20 Metanium, to improve casting performance for light rigs. It holds 0.285mm(US10lb)-100m(110yds), instead of export spool of US12lb(0.30mm)-110yds(100m). Spool depth 7mm at 2mm from side edge, instead of 9mm of export. Comes with brake holder and 4 brake blocks installed. Ready to use. Fits only to 20 Metanium reels. 14.1g