National Hardware's 5/8" Interlocking Spring Snap is designed for lifting, pulling, mooring and other farm, marine, and recreational applications. Storm Shine Finish for style and high resistance to corrosion & abrasion. Safety supports a working load of 738 lbs. Caution: Do not use for overhead lifting, support of human weight, athletic or playground equipment. For exterior applications. Made with steel for durability. National Hardware's Lifespan Limited Lifetime Warranty.