Canvas over a form to fit various internal tracks from # 6 luff tape to #8 metal mast slides.
To use, haul the track cleaner up and down the track with the halyard. The cleaner will pick up dirt & grease. Then send up a second track cleaner to spread dry lubricant (teflon or sailkote) in the track.
Wash them in the washing machine and air dry to re-use.
Round Section Track Cleaner: $45.00
Flat Section Track Cleaner: $60.00