Spark Plug Socket with Universal Joint & Extension 3/8Sq Drive 12-Point 16mmManufactured from hardened and heat-treated Chrome Vanadium steel for strength and durability. Includes internal magnet for retention of spark plug during installation or removal. Extension bar and thin wall design ideal for use in applications with limited access. Universal joint with 360° rotating head allows for increased access at difficult angles. 12-Point standard depth socket. Knurled design for secure grip. Length 310mm.Features HEAT TREATED CHROME VANADIUM STEEL – Manufactured from heat treated and hardened Chrome Vanadium steel for strength and durability. INTERNAL MAGNET – Retains spark plug during installation or removal. EXTENSION BAR – 310mm length for increased access. 360° ROTATING HEAD – Universal Joint with smooth 360° rotating head allowing access to difficult angles. THIN WALL DESIGN – Ideal for use in applications with limited applications. KNURLED DESIGN – For secure grip. 12 POINT STANDARD DEPTH SOCKET – 16mm 3/8”Sq Drive spark plug socket.Specification Manufactured from heat treated and hardened Chrome Vanadium steel for strength and durability. Includes internal magnet for retention of spark plug during installation or removal. Extension bar and thin wall design ideal for use in applications with limited access. Universal joint with 360° rotating head allows for increased access at difficult angles. 12-Point standard depth socket. Knurled design for secure grip. Length 310mm. Model No. AK6576PTDSEAAK6576"