The KNIPEX self Locking Plier Set includes 3 pieces with sizes of 7 inches, 9 inches, and 12 inches. These water pump pliers are made of steel and are adjustable, making them versatile for various tasks. Manufactured in Germany, they come with a lifetime manufacturer warranty, ensuring durability and quality. Perfect for home and workshop use, these self-locking pliers from KNIPEX are a reliable addition to any tool collection.