• Fully integrated extension and mastbase.
• Works with either stitched in pulleys or hooks.
• Compatible with 6:1 or 8:1 purchase systems.
• 2.5cm increments.
• Minumum setting + 2.5cm.
• Heavy duty aluminium.
• Easy adjust collar.
• Stepped rings to prevent sand jamming.

These extensions work really well with nearly all sails on the market and come in a variety of lengths depending on the height and diameter of the mast.

With a minimum set of 2.5cm it allows full fine tuning of your sails.