General description This professional-grade Knipex 250mm Cobra Water Pump Pliers (Model 13277) are heavy-duty adjustable pliers designed for plumbing and mechanical tasks. Made from high-quality chrome vanadium steel, these pliers are oil-hardened and tempered for enhanced durability. They feature smoothly ground jaws and an accurately formed box joint with a safety stop, ensuring reliable performance. Technical specifications Material: Chrome vanadium electric steel Hardness: Hardened teeth to 61HRC Adjustment: One-handed press button Handle: Plastic-coated with slip guards Compatibility and accessories Designed for gripping pipes, nuts, and bolts Compatible with standard sizes of pipes and nuts Installation No installation required; ready to use out of the box. Usage Adjust the jaw size using the press button for a secure grip Use the handles to apply torque on pipes or nuts Ensure the 'no-nip' feature is engaged to prevent handle locking Other information Manufactured to DIN ISO