Selden/Kemp Internal Mast Track Slide
Nylon
Bainbridge track slides have been carefully designed to allow compatibility with the widest possible range of mast sections. Design and material selection leads to trouble-free use and maximum strength even under the most arduous conditions.
This tough, internal track slide is made of injection-molded Nylon. It is used to secure mains or mizzens to their spars to make lowering sails easier.