Set contains 5 of the most common large combination wrenches from 1-Inch to 1 5/16-Inch. Box end offers 12 points minimizing the swing required for positioning and turning. The open end allows you to work in areas with little clearance above the fastener head. Includes sizes: (1, 1-1/16, 1-1/8, 1-1/4 and 1-5/16-Inch).