Amazon.com: 2pcs Carabiner Clip 5/16" inch (8mm) Works Great with Boat Dock Bungee Lines, Stainless Steel 316 Marine Grade Safety Clip, Spring Hook, Rope Buckle Lock : Sports & Outdoors
Steel Carabiner Snap - 5/16 inch - Practice Sports
Item # 2450 5/16, Spring Snap - Steel On Zoron Manufacturing, Inc.