Holt Pro-lube Spray.
 
This is an excellent lubricant designed for marine and general outdoor applications. 
 
Its perfect for minimising friction and helps prevent corrosion in marine hardware such as luff groves and sail slides, travellers and tracks, blocks and cleats, clutches and winches and any other use that requires minimum friction in wet conditions. 
 
The uses are endless, this is a must for all outdoor enthusiasts. Sold individually in 200ml aerosol cans