Nut set suitable for the 211 Base mast foot system. The cheap alternative to bulky and expensive mast base plates. Simply fix one or more double slot nuts in the mast rail using the enclosed grub screw and screw the 211 Base with a free thread.

 Note:
 The sliding blocks can be used for 1-bolt mast base systems from competitors. Although this does not give you the exclusive advantages of a 211 base such as the very low weight and overall height, you can at least secure your setting in the mast rail so that you can find your last setting the next time you surf. It is also ensured that the mast foot cannot slip out of the mast rail while surfing because it was turned too loosely.