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Red 10-inch water pump pliers with curved jaws and push-button adjustment

Klein Tools Cobra Water Pump Pliers 87 01 250 10-Inch

SKU CH-5EY3-7KK55

Adjustable water-pump pliers with push-button setting, 25 positions, self-locking curved jaws hardened to 61 HRC and a pinch guard

  • Total length3.2 L x 5.9 W x 24.9 H centimeters
  • Jaw capacity1 in (2.54 cm)
  • Handle size10 in (25.4 cm)
  • Jaw designCurved Jaw
  • Jaw size2 in (5.08 cm)
  • Position count7
  • Button adjustment on the workpiece for fast sizing
  • Self-locking jaws grip pipes and nuts without slipping
  • Induction-hardened teeth at 61 HRC resist wear
  • Pinch guard stops fingers from being caught
  • Box-joint double guide adds stability

Professional grip for pipe and nut work

The KNIPEX Cobra water pump pliers deliver 10-inch leverage with a curved jaw that self-locks on pipes up to 2 inches and nuts up to 1 inch. Seven jaw positions and a push-button adjustment let you set the opening directly on the workpiece without trial and error. Induction-hardened teeth at approximately 61 HRC resist wear while maintaining reliable grip.

Sustained hold without re-tightening

The box-joint design with double guide keeps the jaws aligned under continuous torque so the setting does not drift during extended fastening or loosening tasks. Self-locking action reduces the hand force needed to maintain pressure on round or hex surfaces. A built-in pinch guard prevents finger injuries when the handles close under load.

German-made durability for daily use

Forged steel handles and a reinforced neoprene rubber strap withstand repeated industrial cycles while the reliable hinge-bolt catch eliminates unintentional shifting. The 25 adjustment positions accommodate a wide range of fastener sizes across plumbing, HVAC and maintenance jobs. Compact 3.2 by 5.9 by 24.9 centimeter profile fits standard tool bags and belts.

How it compares

Measured against everything we stock in Pliers, Wrenches & Gripping Tools, at today’s prices. Recalculated every night.

Price $56.99
Pricier than about 78% of the 2,110 comparable items (median $23.99).

Specifications

Product
Brand nameKlein Tools
Model nameHand Rivet Nut Setter Kit
Part number87 01 250
Color and finishBlue
Size & build
Size or dimensions8
Main materialPlastic
Total length3.2 L x 5.9 W x 24.9 H centimeters
Handle size10 in (25.4 cm)
Jaw designCurved Jaw
Jaw size2 in (5.08 cm)
Handle constructionSteel
Band materialReinforced Neoprene Rubber
Compatibility
Fit and compatibilityOut-Opening, Narrow Stile, Store Front Doors
More details
Jaw capacity1 in (2.54 cm)
Position count7
Pipe capacity2 in (5.08 cm)

Questions about this item

How hot do the jaws get during all-day use?

The jaws are induction-hardened to about 61 HRC, so they resist wear and stay cool enough for continuous gripping without overheating.

What else must I already own for the 87 01 250 to work?

Nothing — the pliers are a complete hand tool with a built-in push-button adjustment and pinch guard, so no extra parts or power source are needed.

Will the 10-inch Cobra pliers damage the finish on older chrome pipes I want to keep?

The hardened teeth grip securely at 25 adjustment positions, but they can mark soft or plated surfaces; use a cloth wrap if surface protection is required.

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