The SOAK Racing Halyard Clip will help prevent the spinnaker launching itself whilst sailing upwind. It also helps retain the halyard during tacks and manoeuvres. The halyard clip automatically releases during a spinnaker hoist so you do not have to remember to unclip it. Automatically releases halyard with force of spinnaker set, Holds halyards out of the way while not in use, High-quality nylon will last for many years, Attachment line included.