RS Zest Mast Collar (Fitting is a replacement part for the mast) Acts as a reviever for the boom jaw which prevents the boom from sliding down the mast. RS Sailing Part # ZES-SP-900
Spring for the mast gate release button on the RS Zest. This spring forces the mast gate release button back into place when the mast gate collar is fully closed. RS Sailing Part # ZES-HF-902
