Knipex Cobra Hightech Water Pump Pliers 250mm, Model 87 02 250 SBA, are adjustable water pump pliers built for gripping, turning, and holding pipes, nuts, sleeves, and other fittings. This is a pair of water pump pliers designed for plumbing, mechanical service, and general gripping work where a secure hold matters. At 250 mm overall length, this size gives you a good balance of reach, control, and everyday carry without stepping up to a bulkier tool.

What makes this tool matter on the job is how quickly it sets and how hard it hangs on once you load it. The push-button adjustment lets you size the jaws right on the workpiece instead of test-fitting over and over. Fine adjustment gives you a closer fit to different diameters, which helps keep the handle span comfortable and the grip more controlled. Knipex also designed the jaws to self-lock on pipes and nuts, so you do not waste effort crushing the handles together just to keep the tool from slipping.

The jaw and joint design do a lot of the heavy lifting here. The box-joint construction gives the pliers high stability under load, and the hinge bolt is designed to catch securely so the setting does not shift unintentionally. That matters when you are breaking loose a stubborn fitting or trying to hold a rounded surface without walking off the edge. The hardened gripping teeth, rated at about 61 HRC, are there for a reason: they stay sharp longer, resist wear, and maintain bite on real-world materials instead of going smooth too soon.

Knipex builds these from forged chrome vanadium electric steel and finishes them with a multi-stage oil-hardening process. In plain terms, that means the pliers are made to take daily use without feeling flimsy or soft at the teeth. The polished head and slim multi-component grips also make this tool more practical than oversized tongue and groove pliers when you are working around valves, supply lines, mechanical equipment, or packed service spaces.

Jobsite comfort is not just about soft handles. The slim grip shape makes the tool easier to carry and easier to maneuver in tight spots, while the built-in pinch guard helps protect your fingers during adjustment and use. That is one of those details you appreciate more the longer the day goes. This model is not insulated, so it is not meant for energized electrical work, but for mechanical and plumbing tasks it is set up exactly the way most pros want it.

If you are a plumber, HVAC tech, maintenance mechanic, remodeler, or serious DIYer who is tired of generic adjustable pliers that slip and chew up fittings, this is the kind of upgrade you notice right away. The Knipex Cobra Hightech Water Pump Pliers 250mm are especially strong for service work where you need one tool to grab round pipe, flats on a nut, and odd-shaped hardware without constant readjustment.

Knipex Cobra Hightech Water Pump Pliers 250mm are the ones you buy when you are done fighting sloppy adjustable pliers

This is a proven everyday service pliers with the jaw bite, adjustment speed, and build quality that make a difference the first week you own it.

• Who it's for: Plumbers, HVAC techs, mechanics, maintenance crews, and serious DIY users who need one pair of adjustable pliers that can actually hold on to pipe and fittings.
• Why it stands out: The self-locking jaws, push-button adjustment, box-joint stability, and hardened 61 HRC teeth work together the way cheaper tongue and groove pliers usually do not.
• Worth knowing: This is not an insulated electrical tool, and it is a single pliers, not a kit. If you want comfort, grip security, and long-term durability in a 10 in. size, though, this is one of the easy calls in the category.

• What type of tool is this? This is a pair of adjustable water pump pliers, also commonly used like tongue and groove pliers for gripping and turning pipe, nuts, sleeves, and fittings.
• How large of a workpiece can it grip? Available source data lists a maximum jaw capacity of up to 2 inches.
• Does it have quick adjustment? Yes. It uses a push-button adjustment system with fine adjustment positions for sizing the jaws on the workpiece.
• Are the handles insulated? No. Source data lists this model as non-insulated.
• Where is it made? Source data lists Germany as the country of origin.