Sunex 3342 3/8-Inch Drive Master Impact Socket Set, Inch/Metric, Standard/Deep, 6-Point, Cr-Mo, 5/16-Inch - 3/4-Inch, 10mm - 19mm, 42-Piece LIFETIME WARRANTY - Sunex Sockets are fully guaranteed & built to last Forged from the FINEST IMPACT GRADE STEEL - the best choice for strength and durability RADIUS CORNER DESIGN for increased torque HEAVY DUTY CASE - includes blow molded storage case