The Knipex 8805250 Alligator Water Pump Pliers are a 250mm professional-grade tool designed for efficient gripping of pipes, nuts, and other workpieces. Featuring a self-locking mechanism on pipes and nuts, these pliers prevent slipping and reduce the effort required by the user. The box-joint design ensures high stability and durability. With 9 adjustment positions, they offer optimal adaptation to various workpiece sizes. The gripping surfaces are specially hardened to approximately 61 HRC, providing high wear resistance and a secure grip. Made from chrome vanadium electric steel, forged and multi-stage oil-hardened, these pliers are built for heavy-duty use. The handles are coated with non-slip plastic for comfortable and secure handling.