Preferred material: Made of high carbon steel, forged alloy steel body increases strength, high torque, good toughness, not easy to slip, durable Universal size: A total of 3 jaws for nuts from 9 to 32 mm in diameter with a two-head design, adjusts quickly and efficiently for worry-free nuts by choosing the right size Equipment design: The bite is tight, the hook and the handle are connected by reinforced rivets, and the surface is painted and painted, which is not easy to oxidize TPR non-slip grip: ergonomic and non-slip keys are good enough, they have a bi-material handle for a comfortable grip Widely Used: Ideal for automotive maintenance and repair, coiled tubing and nuts, plumbing and general assembly tasks