National Hardware's 7/16" x 2" Spring Snap is designed for use with rope, animal leashes and other home, farm and recreational applications. Zinc die-cast body and stainless steel spring for lightweight durable construction. Designed to install and remove quickly and repeatedly. For quick repeated attachments in a wide variety of applications. Swivel eye eliminates tangling. Light Duty Rating with 20 lbs. Safe Working Load, always follow safe working load (SWL) limits included on packaging. National Hardware's Lifespan Limited Lifetime Warranty.