The Werner Ladder Telescoping Dynamic Hinge Kit PN 63648-01 is a set of 2 aluminum hinged joints designed for multi-position ladders. With a load capacity of 300 lbs and an item height of 20 1/2 inches, these hinges provide stability and versatility for various ladder configurations. The telescoping feature allows for easy storage and transport, making it a convenient addition to any workshop or home improvement project. Made by trusted brand Werner, these hinged joints are a reliable and durable option for ladder construction.