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 9-32mm diameter nuts with a two-head design, adjust quickly and efficiently for worry-free nuts by choosing the right size Equipment design: The bite is tight, the hook and handle are connected by reinforced rivets, and the surface is painted and painted, which is not easy to oxidize TPR non-slip handle: the ergonomic and non-slip keys are quite good, they have a dual-material handle for a comfortable grip Widely Used: Ideal for automotive maintenance and repair, spiral tubing and nuts, plumbing, and general assembly tasks Features When you catch the " turn " you just have to let go and keep tightening or loosening, not like the lifetime wrench that needs adjustment every now and then Adjustable wrenches have a narrow head design for limited space applications and SAE laser marking and jaw scale metric