National Hardwares 1/4" & 5/16" Double Clevis Link is designed for making quick connections with chain in industrial and construction applications. Manufactured from forged steel for durability. Not designed for over-head lifting and always use with chain of equal or lower grade. Designed to make quick connections with chain in industrial and construction applications. Meets Grade 43 hook specifications. Heavy Duty Rating with 3,900lbs. Safe Working Load, always follow safe working load (SWL) limits included on packaging. National Hardwares Lifespan Limited Lifetime Warranty.