This snap shackle is quick and easy to use, ideal for a spinnaker sheet or boom,dedicated to spinnaker or headsail manoeuvres on boats.
Five Oceans 2 3/4 Swivel Eye Snap Shackle Quick Release Bail Rigging for Sailing Boat, 316 Marine-Grade Stainless Steel Clip Carabiner Hook - FO443 : Sports & Outdoors
Buy Wichard 2481 Snap Hook 75mm in USA Binnacle.com
Textil strope with spinnaker snap shackle T-sail®