Content - Drive size: 3/8 inch, spark plug wrench 14 mm, 12-point design. The unique button design increases grip friction, making spark plug removal easier. Materials - This Zundkerzenschluessel 16 mm is made from high quality chrome-vanadium steel, heat treated for high hardness, durability, and corrosion resistance. The internal magnet does not wear over time, unlike traditional rubber washers, ensuring a long life. Magnetic support - The wrench is equipped with a strong magnet to securely hold the spark plug and prevent loss. The spark plug socket rotates 360 degrees. Ease of use - The concave-convex design increases friction for easier removal and handling of the spark plug. The internal magnet secures and protects the plug wrench, ensuring firm retention during installation and removal. Use scenarios - Automotive maintenance: replacing spark plugs on vehicles using 14 mm plugs with a 3/8 inch drive. - Small engine service: lawn mowers, generators, and motorcycles with 14 mm plugs. - Difficult access situations: the 360-degree swivel enables reaching plugged connections in tight engine bays.