This is the FE (Fast Electric) Mono Turn Fin for the AquaCraft SuperVee Deep Vee Boat, AQUB17**. FEATURES: Aluminum construction, anodized Blue in color INCLUDES: Mono Turn Fin with two 3x12mm cap head screws, mounting bracket, spacer and 4x6mm cap head screw REQUIRES: Installing at rear of hull SPECS: Length: 1.8" (46mm) Width: 1.1" (29mm)