Professional tool for commercial or occasional use -Diesel injector line sockets -Diesel injector fuel line socket wrenches -Suitable for dismantling injector lines on most diesel engines -1/2" drive so will for any 1/2" drive ratchets / bars / extensions -12 point Bi-hex sockets for maximum gip when using the tool SET INCLUDES THE FOLLOWING SIZES - 14mm / 17mm and 19mm -Suitable for use on most BMW and Audi Vehicles -3pc set -Comes in a blow molded case for easy storage and transportation -Manufactured from chrome vanadium steel for strength and durability -All individually marked for easy visibility