Slingshot M6 Bolt Adapter
This is a threaded insert that allows you to use 6mm fins screws (standard metric windsurfing fin screw size) with a Slingshot tuttle base foil that normally takes 10mm fin screws. Just thread this insert into the Slingshot tuttle base and then you will be able to use 6mm fin screws to hold the foil to the board. This is not recommended for long term use! Slingshot uses 10mm bolts because they feel the stress of the foil requires the extra strength of larger diameter bolts. However, if you are in a pickle - this will get you on the water!