National Hardware's #3 4-1/8" Ceiling Hooks are designed for home and industrial use. Storm Shine Finish for style and high resistance to corrosion & abrasion. Safety supports a working load of 60 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