plain bearing block / single / with swivel / for sailboats
NEX 2.5 / 5.0
Number of sheaves:
The halyard block is an optional accessory to be used with Profurl flying sails furlers. Integrated into the top swivel, it allows to optimize the luff length. The sheave box stands half of the load and the chafe of the halyard is minimised. The halyard block is often use with heavy sails.