3 fins that are Single Tab compatible; Surf Twin Fin Set + Trailer Fin (2+1 Fins) - Solid Fiberglass and Nylon- for Single Tab Surf Boards, Shortboard<br> Twin fins with a small stabiliser (centre fin) which adds control while maintaining manouverability of a twin fin setup; You can with or without the stabiliser fin; Perfect for modern fish and twin fin model surfboards.<br> Nylon and Fibreglass strongest fin construction and has the best flex; The fins have a finish, ensuring a , fast surface.<br> Twin fins are flat foil - Base: 133mm & 5.236 inch, Height: 135mm & 5.315 inch<br> Trailer Fin is double foil - Base: 89mm & 3.5 inch, Height: 86mm & 3.386 inch<br> Applicable People: Unisex<br> Outdoor Activity: Water Sport Surfing<br> Model: Single tab base<br> Outdoor Activity: Surfboard Accessories<br> color:Black<br> Material:Nylon+glass fiber<br> Package Contents:<br> 1 x Surfboard Fins kit(3pcs)<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.