2:1 halyard block for Seldén CX45, CXr45 and CXe45 Code Zero furler.

Machined and hard anodized aluminium block with captive pin. Acetal sheave.

To boost the performance when using a Code Zero, the halyard load must be higher than what normal halyard boxes and stoppers can handle. Therefore, a 2:1 purchase needs to be arranged by fixing the dead end of the halyard in the mast and letting it run
through a block attached to the halyard swivel. Position on the mast must be specified by Seldén. In most cases Code 0 sails need to be hoisted lower than gennakers and spinnakers. 

This block is also ideal for a 2:1 purchase on the main halyard.

Sheave Diameter: 50 mm
L1: 104 mm
L2: 31 mm
W: 24 mm
D: 12 mm
Safe working Load: 4000 kg
Breaking Load: 8000 kg
Max line size: 16 mm
Match: CX40