A Spinnaker or Snatch block from Lewmar size 1 or 66mm sheave. Suitable for boats up to 45 feet or so depending on application. Usually used to divert a genoa or spinnaker sheet but of course a very useful item to have on board as it can be added to a rope already bent on and under load. This block is in perfect working order having been well maintained and used on a well kept cruising yacht, it has a custom 5 ton soft shackle for mounting onto the toe rail as well as an elastic shock cord and clip to keep it off the deck. Cheeks and shackle work as they should. Release tag included. I have a pair for sale if you require both please ask. Please check my other sailing items.