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Amazon.com : AQUBONA Surfboard Fins, Fiberglass Double Tabs Single Tab Fins, Thruster (3 Fins) G5 Medium Fin for Surfing with Fin Key Screws Bag, Multiple Colour : Sports & Outdoors
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Possibly the best large thruster surfboard fin available online right now for Futures and FCS fin boxes - Lunasurf
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Amazon.com : DORSAL Surfboard Fins Thruster 3 Set Future Compatible Natural Medium Glass Filled Nylon with Flexcore : Future Surf Fins : Sports & Outdoors
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Amazon.com : Surf Squared Large Fins Set (3 Fins) - Honeycomb Fiberglass - Ride as Twin or Thruster - Performance Surfboard Fins Compatible with Futures Single Tab Surfboards : Sports & Outdoors
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