The Gorilla Ladders Replacement Hinge Lock Kit is designed specifically for 4-step ladders, providing a secure and reliable locking mechanism. Made of durable fiberglass material and crafted in the United States, this kit includes a case and wrench for easy installation and maintenance. With the trusted Gorilla brand name, you can be assured of the quality and strength of this ladder accessory. Perfect for keeping your step ladder securely locked in place for added safety and convenience.