Application for Mercedes for Benz injection lines for BMW for Opel 2.5TD Diesel Engines for other injection lines which require a flare nut opening socket. Specification Condition: New Color: Silver Tone Length: 120mm/4.7in Size: 1/2" Square Drive Opening: 14mm 17mm 19mm 12 Point Material: Carbon Steel Craft: CNC Machined Head Style: Flare Nut, Fixed Square, Hex Operation Mode: Manual Include: 1 x 14mm Injection Fuel Line Socket, 1 x 17mm Injection Fuel Line Socket, 1 x 19mm Injection Fuel Line Socket Function of Injection Fuel Line Socket. This nut wrench for removing/dismantling 17mm injector lines on diesel engines. The open end 12 point (crowfoot socket) use on common rail injection lines like for Mercedes for Benz injection lines. The other open end 14mm 17mm 19mm 1/2" Drive socket use to screwed in injection lines on diesel common rail injection systems. Reduce the possibility of fuel leaks and prevent damage to fitting, fuel rails, and fuel line during your disassembly process. Features of Injection Fuel Line Socket Nut Wrench. Adopting durable chrome vanadium steel to ensure reliability, high strength and toughness for durability. Slight bending angle on handle to reduce the distance from fuel line, more easy to get onto a socket and tighten/loosen nut in a confined spaces on vehicle. Notice This is a non-OEM product, accessory only! Please allow 0.1~0.5cm measure error.