Dynamic Tools D010016 3/8" Drive Metric Standard Hex Socket Set (7 Piece), 4mm to 10mm Contains: 4, 5, 6, 7, 8, 9, 10mm Chrome finish for maximum resistance against corrosion Large laser etched markings on sockets improve size identification and provide differentiation between SAE and metric sizes Knurled ring provides superior grip for quicker and easier removal of socket from ratchets and attachments Lifetime warranty