The Fin-S 2.0 Tool-Less Center Surf Fin (1pk) White 4.0". The most simplistic easy to use tool-less fin system created by our friends at Fin-S. A center spring load so you can put the fin on flat without having to apply added pressure to the front or back of a fin like most other fin setups. Combined with a lightweight strong fiberglass epoxy constructed fin for added drive and the least in friction with the water. A similar rake, and outline as the floating version. These standard fins are made out of a traditional fiberglass. They don’t have the response of our other Fin-S Fins – but they are used on the same tool-less mounting system.