Knipex 87 01 250 SBA 10 in. Cobra Water Pump Pliers are adjustable tongue-and-groove style pliers built for gripping, turning, and holding pipes, nuts, sleeves, and other fittings. This is a water pump pliers tool designed for plumbing, mechanical service, and general repair work. Model Number: 87 01 250 SBA. If you need one pair of pliers that can move from small fittings to larger pipe without constant repositioning, this is the kind of tool that earns a permanent spot in the bag.

The big selling point here is the one-hand push-button adjustment combined with 25 fine adjustment positions. That matters because you can dial the jaw opening closer to the workpiece instead of settling for a too-loose or too-tight setting. A closer fit gives you better control, helps the jaws stay planted, and keeps handle spread more comfortable in the hand when you're working on valves, compression nuts, or corroded hardware.

Knipex built these Cobra pliers to self-lock on pipes and nuts, which is a real difference on the job. Instead of wasting hand strength clamping down hard just to keep the jaws from walking off the part, the jaw geometry helps the tool grab under load. On stubborn fittings, that means more of your effort goes into turning the workpiece. On smoother or rounder material, it means less slipping and less chance of rounding off the edges.

The box-joint design is another reason these pliers feel more solid than bargain options. With a double guide for stability and a securely caught hinge bolt, the joint stays controlled under pressure and resists the twisting and wobble you get from lighter-duty pliers. That adds up to better tracking on the fastener, a more confident feel in tight spots, and less wear over time if the tool sees daily service use.

Material and heat treat matter on a hand tool like this, and Knipex did not cut corners. The pliers are made from chrome vanadium electric steel, forged, and multi-stage oil-hardened. The gripping teeth are specially hardened to about 61 HRC for wear resistance and long-term holding power. In plain terms, that means the teeth keep their bite longer, especially if you regularly work on hard fittings, steel pipe, or stubborn nuts that tend to chew up softer tools.

At 250 mm overall length, or about 10 inches, this size hits a sweet spot for many trades. It is large enough for meaningful leverage and up to 2 inch jaw capacity, but still compact enough for service calls, maintenance carts, and everyday carry in a hand tool setup. The listed weight of 0.73 lbs helps keep it useful as an all-day tool instead of a specialty pair you only grab once in a while.

Jobsite usability details are well thought out too. The spring-loaded hinge bolt is designed to lock securely so the setting does not shift unintentionally, and the built-in pinch guard helps protect your fingers when the handles close. The plastic-coated handles are straightforward, durable, and easy to clean after plumbing, mechanical, or maintenance work.

Who should buy these? Plumbers, HVAC techs, plant maintenance crews, mechanics, and serious DIY users who are tired of adjustable pliers that slip under load. If your work involves pipe, locknuts, compression fittings, pump connections, or general service fasteners, the Knipex 87 01 250 SBA 10 in. Cobra Water Pump Pliers are the kind of upgrade you notice the first time a seized fitting breaks loose without a fight.

Why the Knipex 87 01 250 SBA 10 in. Cobra Water Pump Pliers keep showing up in pro tool bags

This is one of those hand tools that feels expensive until you use it on a seized fitting and realize why people stop buying the cheap ones.

• Who it's for: Plumbers, HVAC techs, maintenance crews, mechanics, and serious DIY users who need one adjustable pliers option that actually holds under load.
• Why it stands out: The push-button adjustment is fast, the self-locking bite saves hand effort, and the hardened teeth plus box-joint design give it the durability pros expect from Knipex.
• Worth knowing: This is a single 10 inch pliers, not a set, and the plain plastic-coated handles keep things simple rather than padded or insulated.

• What is the maximum capacity? The listed capacity is up to 2 inches, with a wrench opening up to 46 mm.
• How is the jaw adjusted? It uses a push-button system with 25 fine adjustment positions for quick sizing on the workpiece.
• What is the tool made from? The pliers are made from forged chrome vanadium electric steel and are multi-stage oil-hardened.
• Are the gripping teeth hardened? Yes. The gripping teeth are specially hardened to approximately 61 HRC for wear resistance and stable grip.