The National Hardware Outdoor Locking Snaps support many sporting activities including your next big adventure. Materials are made of Steel for durability. 2 - Spring Snaps are included. Includes 2 Outdoor Locking Snaps 3-15/16" in size. Ruggedly designed to accompany you through all of life's adventures. Make quick connections with these durable, easy-to-use, locking snaps. National Hardware Lifespan Limited Lifetime Warranty Safe Working Load of 500 lbs. per snap.