Water pump pliers Knipex Cobra ES 87 51 180 SB – adjustable jaw 0–45 mm

Knipex Cobra ES 87 51 180 SB water pump pliers provide an adjustable jaw capacity of 0–45 mm in a compact 180 mm body. Designed for gripping, turning and holding pipes, fittings and fasteners of different sizes, these pliers feature a quick-adjust mechanism that allows fast repositioning and secure engagement without slipping. The compact length and slim profile make the tool suitable for work in confined spaces while maintaining reliable force transmission for plumbing, installation and maintenance tasks.

Advantages

The pliers offer precise jaw adjustment with a single-hand quick-adjust mechanism, enabling fast adaptation to a wide range of diameters. Hardened gripping surfaces ensure long-term durability and secure hold on round and flat workpieces. The compact 180 mm design improves access in tight areas, while the ergonomic handles provide controlled torque and comfortable handling during repeated use.

Suitable for

• Gripping and turning pipes and tubing
• Assembly and disassembly of fittings and connectors
• Holding fasteners and components during installation
• Maintenance tasks in confined or hard-to-reach spaces
• Plumbing, HVAC and general repair work

Key specifications

• Adjustable jaw capacity: 0–45 mm
• Overall length: 180 mm
• Type: water pump pliers with quick-adjust mechanism
• Grip style: serrated hardened jaws for secure holding
• Operation: single-hand adjustment and reliable force transmission
• Handle: ergonomic design for improved control

How to use

Select the jaw opening by operating the quick-adjust mechanism until the serrated jaws match the workpiece diameter. Position the pliers so the gripping surfaces engage the pipe, fitting or fastener, then apply controlled force to turn or hold the item. For safe and effective use, ensure the jaw is fully seated on the workpiece before applying full torque. Retract the adjustment to release the workpiece when the task is complete.

Recommendations

Use the pliers for gripping metal and plastic pipes, nuts and other components within the specified jaw range. Avoid excessive force on brittle materials and do not use the tool as a hammer or pry bar. Regularly check jaw condition and keep the quick-adjust mechanism clean and lightly lubricated for consistent performance.