Check the listing for details. MR TWIN FIN + trailer POLYMER CORE surfboard fibreglass set x 3 FCS compatible. Condition: New. Listed at 39.83 USD. TWIN FIN SET with STABILISER FIN Based on the MR twin fin template. You are purchasing a set of 3 fins that are FCS compatible. Twin fins with a small stabiliser (centre fin) which adds control while maintaining manouverability of a twin fin setup. You can ride with or without the stabiliser fin. Perfect for modern fish and twin fin model surfboards. Twin fins are flat foil - approx 140mm high, 124mm wide at base Stabiliser fin is double foil - approx 92mm high, 87mm wide at base Fibreglass fins with a superlight hexcomb foam core. The hexcomb foam construction delivers a fibreglass fin that is ultralight, with a flex pattern that provides speed & control. The fins have a matt finish, ensuring a smooth, fast surface. Other colours & styles are listed on my ebay store. For purchase of multiple items, we are happy to calculate the combined postage & handling costs. Please contact us for a quote.