US box system with manual screw, no tools required.
Its large surface increases directional control.
Its surface increases the board's stability and makes paddling easier.
1/ slide the small metal plate towards the front of the rail 2/ insert the rear stop of the fin into the rail and push it backwards 3/ screw the fin to the plate without forcing 4/ check that there is no play and that the fin is secure.
Height: 26 cm Width: 25 cm Thickness: 0.8 cm Weight: 0.23 kg