Mastro Professional Heavy-Duty 10-Inch (250mm) Water Pump Pliers with Adjustable Groove Joint & Insulated Anti-Slip Handles

• The Mastro® Heavy-Duty Water Pump Pliers are designed for plumbing, mechanical, HVAC, and general maintenance operations requiring reliable gripping force on round, hex, and flat workpieces. Drop-forged from high-grade alloy steel and heat-treated for maximum durability, these 10-inch (250 mm) pliers feature deep, hardened jaw teeth that bite securely into pipes, nuts, and fittings to prevent slipping under heavy leverage. The multi-stage box-joint adjustable pivot mechanism allows quick and precise width adjustments across a wide range of jaw capacities. Finished with a protective black oxide coating and fitted with bright red vinyl dip-coated handles for a comfortable, slip-resistant grip.

Specifications Table

Key Features & Standards

• Drop-Forged High-Grade Steel: Forged alloy steel construction provides maximum structural strength and torque resistance.

• Induction-Hardened Serrated Teeth: Deeply machined gripping teeth offer a self-locking bite on pipes, hex bolts, and odd-shaped fasteners.

• Multi-Stage Adjustability: Groove-joint pivot mechanism smoothly shifts across multiple jaw openings to fit various pipe and fitting sizes.

• Cushioned Anti-Slip Grip: Red dip-coated vinyl handles provide a secure, comfortable hold even when working with wet or oily hands.

• Certified Quality Standards: Manufactured in compliance with GS and IAF quality and safety standards for professional trade use.

⚠️ Safety Warning: Non-insulated tool handles—do not use on live electrical circuits or energized wiring. Keep fingers clear of the inner handle squeeze zone during high-torque clamping to avoid pinch injuries. Ensure the jaw joint is fully engaged in a groove slot before applying force.