4.8:1 power gear kit for Shimano 15/18Conquest 300/301/400/401 reels. 15 models are 5.6:1 gear, 18 models are 6.2:1 geared. With this power gear kit your reel will have 15%/23% more cranking power. Drag capacity will be souped up from 7kg to 8kg. For details, please refer to this page how to install gears to 14/15 Conquest reels