The blocks are connected to the leech of
the mainsail with webbing, and reduce point
loading on the mainsail when reefing. The
small diameter sheaves are suitable to very
high loads.
The center hole can be used as a safety
connection to the boom when reefed.
The small version (D = 50 mm) is for boats to
50 ft, larger (D = 120 mm) for boats to 100 ft.
Part Number: 994.085
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