Follow this link to the Tides Marine Web Site
This system has been installed on 50 foot boats and 27 footers as well
With Very Positive Results. Luff extrusion Installs in Minutes.
Especially nice upgrade on Nonsuch 33 and other boats
that use "External" Sail Tracks
we sell it in a "Package Deal" with new Mainsails as well
800-323-9464