Add even more performance to your Catch Surf� board! These super-light weight, honey-comb epoxy resin ultra-performance fins reduce weight and add more drive and speed with engineered spring and flex to maximize the performance of your Catch Surf board. The only ultra-high performance fins specifically designed and engineered for use with Catch Surf boards and our fin system. Available in four (4) rad colors to match your stick. Tri/Thruster set includes three 4.5 fins, Catch Surf canvas fin case and Catch Surf fin key (dual-purpose tool; works to tighten top screws and tighten/loosen fins screws). Only compatible with Catch Surf's Hi-Perf Fin System. For use with 54 Special, Stump (TRI), JOB PRO (5'2 only), Beater PRO, ...Lost x Odysea RNF (All Sizes), ... Lost x Odysea Crowd Killer and 2018+ Logs. Imported