The Grainger 15D551 is a Westward brand 1/4-inch drive socket set. This 108-piece socket set includes both SAE and metric sockets ranging from 1/4 inch drive to 3/4 inch drive in shallow, deep, and universal depths. The set is made from chrome vanadium steel and comes packed in a sturdy plastic blow mold case for storage and portability. This socket set is ideal for automotive and machinery work.