Diesel Injector Fuel Line Sockets are used to loosen and tighten nuts and bolts in confined spaces such as fuel injector connections. Easy to use. Compatible with most BMW and Audi Vehicles. Suitable for dismantling injector lines on most diesel engines. 1/2" drive socket wrenches for any 1/2" drive ratchets / bars / extension. Made of high-qualize matial, not easy to rust. Comes with 6pcs 12/14/16/17/18/19mm diesel injector fuel line socket wrenches, all parts neatly placed in a carrying case, and equipped with a pair of gloves, easy to carry and store. Customer Satisfaction Service: If there is any problem with our products, you can get help from us. Diesel Injector Fuel Line Sockets are used to loosen and tighten nuts and bolts in confined spaces such as fuel injector connections. Easy to use. Compatible with most BMW and Audi Vehicles. Suitable for dismantling injector lines on most diesel engines. 1/2" drive socket wrenches for any 1/2" drive ratchets / bars / extension. Made of high-qualize matial, not easy to rust. Comes with 6pcs 12/14/16/17/18/19mm diesel injector fuel line socket wrenches, all parts neatly placed in a carrying case, and equipped with a pair of gloves, easy to carry and store. Customer Satisfaction Service: If there is any problem with our products, you can get help from us. Customer satisfaction is our top priority.