Thruster Fins Thermotech Alpha F6 AM1 Alpha AM2 Alpha Quad Rear Fins Alpha Quad Rear QD2 4.00 Alpha Quad Rear QD2 3.75 QD2 hc 4 Symmetrical QD2 hc 3.75 Symmetrical Quad Fins Controller HC Quad Controller Alpha Quad Rob Machado Quad Twin Fins K2 Keel Al Merrick Keel Twin Fin EN FG Twin Fin Set Teal Britt Merrick Twin Al Merrick Keel Twin Fins K2 Alpha Keel Single Fins Performance 9.0 Fiberglass Ando 7.8" Fiberglass Gerry 7.75” Fiberglass Tiller 9.0 Fiberglass Machado 7.5" Fiberglass Machado 8.5" Fiberglass Sidebite Fins SB1 Fiberglass Sidebite