Drive Type: 12-point double box-end. Fastener Sizes: Dual configuration featuring 3/8-inch on one side and 7/16-inch on the other. Design: Offset handle geometry, optimized for clearing obstructions and protecting your knuckles during high-torque applications. Material: Premium Armaloy steel alloy, highly regarded by mechanics for its exceptional strength-to-weight ratio and resilience. Manufacturing Origin: Proudly made in the USA.