Specific to the Nacra class, the SLEEVE is meant for the kite sheet blocks, to ensure that other ropes don't get sucked in while trimming the kite.
Designed for Harken 57mm ratchet block.
Comes as a set of 2 pieces, in either of the two options:
- Hull - what most teams use
- Front beam - for those that are double ratcheting, this one has an opening that matches the kite sheet exit angle
Keep in mind that these are currently not class legal for the Nacra 17 class.