Features • All tools are professional quality, made of high-grade chrome vanadium steel • Sockets feature SUPERTORQUE® lobular openings for greater turning power without deforming the fastener • Packed in rugged high-density polyethylene (HDPE) cases that are strong and durable yet light in weight • Case is shock proof at both high and low temperatures, equipped with heavy-duty metal latches and hinges • Two-component handles are easy to grip and comfortable to carry