Shallow tuning spool for Shimano 16Metanium MGL reels. Machined from air craft grade duralumin bars to make them the lightest, and still tough. Please use SVS infinity brake from stock spool. Stock spool 11.8g without SVS, 0.285mm-100m

MT1620RI 11.4g, 2.0mm deep, 0.260mm-40m, may work with MT16K magnet brake

MT1636RI 11.8g, 3.6mm deep, 0.285mm-60m, may work with MT16K magnet brake

MT1670R 11.8g, 7.0mm deep, 0.330mm-95m