Designed to remove and insert spark plugs with ease using magnetic rings to hold plug in socket while installing or removing it. Set is made up of 12 magnetic sockets with a satin finish, all laid in a black and green EVA foam with labeled sizes. Each socket is conveniently knurled to allow the tech to turn by hand if needed. 3/8 Drive sockets hold the plug once removed. 14mm OAL 6 Extra Deep Magnetic Spark Plug Socket. 14mm Swivel 6 Point 3-3/8 Magnetic Spark Plug Socket. 14mm 12 Point Thin Wall 2.5 Magnetic Spark Plug Socket. 14mm 6 Point 2.5 Magnetic Spark Plug Socket. 16mm 6 Point 2.5 Magnetic Spark Plug Socket. 9/16″ Swivel 6 Point 3-3/8″ Magnetic Spark Plug Socket. 9/16″ OAL 6″ Extra Deep Magnetic Spark Plug Socket. 9/16″ 6 Point 2.5″ Magnetic Spark Plug Socket. 5/8″ Swivel 6 Point 3-3/8″ Magnetic Spark Plug Socket. 5/8″ 6 Point 2.5″ Magnetic Spark Plug Socket. 5/8″ OAL 6″ Extra Deep Magnetic Spark Plug Socket. 13/16″ 6 Point 2.5″ Magnetic Spark Plug Socket.