High hardness carbon steel: The cross wrench is made of high quality carbon steel, which is durable, anti-corrosion, anti-rust, flame retardant, heat treated and has good toughness. High hardness, high torque , high strength.They have a long service life and you can use them for a long time. Exquisite workmanship: The high-quality cross wrenches are made of high-temperature hot forging, fine welding, multi-layer machining and 90 welded legs, which are strong and not easy to fall off or break. The chrome surface is smoothand smudge-free, so it won't scratch your hands during use. 4 Specifications: The adjustable wrench head has four specifications: 17cm, 19cm, 21cm, 23cm. Different series of vehicles may use different measuring lengths. You can choose the right length for your tire model fromcar. EASY TO USE: The car wheel wrench has an X-shaped design, so you can use it with two hands to increase torque. Changing tires is easier and more convenient. Sturdy crossbar. With specification markingsclear, you can safely remove your tires. Please select the model that matches yours. Application: The wheel nut wrench is suitable for emergency vehicle repairs, professional vehicle warranty and fixing at factory repair sites. The production workshop is free, etc., and it is an emergency assistantfor your car. If you encounter any special situation while driving, in order to ensure your driving safety.