Designed and engineered to remove and install the spark plug. The inner magnet does not wear out over time like conventional rubber seals and provides a long service life. 【High Flexibility】: The spark plug socket set has a 360 degree swivel function for maximum flexibility and allows access to the tightest areas. 【UNIQUE DESIGN】: Le jeu de douilles pour bougies d'allumage a une fonction pivotante à 360 degrés pour une flexibilité maximale et permet d'accéder aux zones les plus étroites. 【CONCEPTION UNIQUE】: Magnetic and thin-walled design ensures a perfect fit when installing and removing, so you don't have to worry about losing one. 【Widely Used】- Magnetic spark plug socket compatible with BMW, BMW mini such as BMW N54, N55, N63, Benz E90, etc. Specification: Material: Carbon Steel Size: 16mm 14mm Packing Lists: 1 * 14mm Thin-Wall Spark Plug Socket 1 * 16mm Thin-Wall Spark Plug Socket