Ten-piece 3/8 drive metric set includes sizes ranging from 10 mm-19 mm. Heat treated for long wear. Packaged on socket rail. Applications: air conditioning, fuel and hydraulic line fittings. Available individually. Features and Benefits: * Used for air conditioning, fuel and hydraulic line fittings * Heat treated * Carded with socket rail Includes sizes 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm and 19mm.