Description The Pro?Grade 7 Piece 1/2 Inch Drive Metric Impact Socket Set is designed to deliver professional strength performance and long lasting durability. Built from heat treated chrome vanadium steel these sockets provide maximum strength while a nickel chrome finish helps resist rust and corrosion. Precision manufacturing and strict quality control ensure each socket meets or exceeds ANSI specifications for dependable performance. Featuring chamfered edges and the Dyna Drive torque system this set directs torque to the sides of fasteners to improve grip and increase torque capacity. Ideal for professionals and serious DIY users this impact socket set offers reliable performance backed by an unconditional lifetime guarantee.Product Details:Metric impact socket set7 piece set1/2 inch driveIncludes sizes 13 mm 14 mm 15 mm 16 mm 17 mm 18 mm 19 mmHeat treated chrome vanadium steel constructionNickel chrome plated for rust and corrosion resistanceChamfered socket edges for smooth fastener engagementDyna Drive torque system for improved torque transferMeets or exceeds ANSI specification B107.5MIncludes storage railDesigned for professional and heavy duty use