[High quality] Made of heavy-duty heat-treated chromium vanadium (CR-V) steel, to ensure higher hardness, better clamping force, toughness and durability, and nickel plated on the surface , rust and wear resistance [Adjustable tongue] 7 adjustable jaw positions, jaw opening up to: 40 and 52mm, deepen the teeth, a better bite, provide strong grip, not easy to slip, the hardened edges can increase the force [Easy to use] The water pump pliers are ergonomically designed, easy to hold and grasp, and with non-slip rubber handles, will not hurt hands even if they are operated for a long time under high pressure [Size] 8Inch: 20 x 4cm, opening: 0-40mm; 10Inch: 26 x 5cm, opening size: 0-50mm, can easily and firmly hold different sizes of components, including round, flat, square and hex shapes of workpieces [Applicable] Suitable for clamping, pulling, tightening and loosening nuts, bolts and professional pipe fittings etc, perfect for water pipes, car repairs, faucet replacement, heating repairs, etc.