Fits to 2020 Metanium, 2022 Metanium Shallow, and 2023 Metanium 100 models, US version Metanium MGL B as well. Genuine spool of Japan version 20 Metanium, 20% shallower spool than US version Metanium MGL B, 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 MGL B. Comes with brake holder and 4 brake blocks installed. Ready to use. 14.1g Doesn't fit to 2024 Metanium DC.