POWERFUL GRIP FOR VERSATILE SHAPES: Equipped with serrated, multi-grip jaws for superior biting force, these groove joint pliers easily clamp square, round, hexagonal, and flat objects—ideal for pipes, fasteners, and more,HIGH QUALITY CARBON STEEL FOR LONG-LASTING DURABILITY: Forged from premium carbon steel, the water pump pliers feature a hardened body (HRC 48-50) and ultra-tough teeth (HRC 58-60) with precision-machined grooves for maximum strength and wear resistance,MULTI--POSITION ADJUSTMENTS FOR PRECISION FIT: You'll get 2-piece groove joint pliers (8-inch water pump pliers with 5-position settings & 12-inch water pump pliers with 7-position settings). The multi-position slip-joint mechanism and deep-groove anti-slip design ensure secure alignment and prevent slippage, adapting seamlessly to nuts, bolts, and pipes of various sizes for efficient work,NON-SLIP HANDLES FOR COMFORT & CONTROL: Ergonomic dipped handle with a lightweight design provides an oil-resistant grip, reduces hand fatigue, and enhances stability during prolonged use,BLACK PHOSPHATED FINISH FOR TOUGH ENVIRONMENTS: A rust-resistant black phosphated finish boosts corrosion protection, making these tongue and groove pliers perfect for damp, dusty, or demanding conditions. Built to last through years of hard use, they're the perfect choice - whether you're working around the house, in the shop, or on a professional job site