Compatible with all systems, Schaefer's pre-feeder is helpful if you intend to change sails often. Aligns your luff
tape before it enters the stainless steel feeder.
Avoid halyard wrap on your sailboat with the addition of a Schaefer
The likelihood of the halyard becoming entangled or "wrapped" around the furler
extrusion is a function of the angle of the lead out of the masthead
sheave in relation to the upper swivel unit.