Box-end or closed-end wrenches are a must-have for any mechanic. This Sonic 4-piece wrench set offers 8 different sizes with just four wrenches. The double box-end wrenches also include a 75-degree offset for better access to fasteners. Sonic wrenches are made from Chrome-Vanadium steel for a lifetime of durability, strength, and corrosion resistance. Sizes include 21, 23, 24, 25, 27, 28, 30, and 32mm.
