Material — Made of chrome alloy steel, heat treated. Internal volume — 12mm, 14mm, 16mm, 17mm, 18mm, 19mm and depth: 100 mm. Practical function — Specially designed for loosening and tightening nuts and bolts in confined spaces such as fuel injector connections. Scope of application — 1/2" drive, so will all 1/2" drive ratchets/bars/extensions Easy to store: supplied in a blow molded case< /p> Product Description Product Description 6Pcs Mrcartool Open End Ring Diesel Injector Line Wrench Socket Set Injector Socket Wrench Set diesel into 1/2" Dr for removing injector lines on most diesel engines Professional tool for commercial or occasional use Diesel injector line sockets Diesel Injector Fuel Line Socket Wrenches Suitable for removing injector lines on most diesel engines 1/2" drive, so will all ratchets/bars/extensions d 1/2" drive Feature Specifically designed for loosening and tightening nuts and bolts in confined spaces such as fuel injector connections. For