Features and Benefits: * Chrome Molybdenum Alloy Steel for exceptional strength and long lasting durability * High visibility laser etched markings with additional hard stamping on the opposite side * Surface drive technology * Pin hole available for use with pin and o-ring for secure socket retention * Sockets come packaged in a reinforced molded case with sizes marked for quick identification and storage Case has reinforced steel hinges and buckles for added durability, security and strength. Set includes sizes: 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 1mm, 17mm, 18mm and 19mm.