SAE size: 3/8 in. Premium Chrome Vanadium steel forged with a complete 10-step state of the art heat treatment process, constructed for serious professionals in high torque environment. Constructed longer than most other standard-pattern wrenches, giving you more leverage and access to hard to reach areas. Flawless chrome plating, achieved through thorough polishing and careful application of chrome protective plating, ensures durability and corrosion resistance. 12-point WaveDrive box end transfers torque uniformly and prevents damaging and rounding of the bolt, 15-degree offset for knuckle clearance and working in tight spots. This Capri Tools Combination Wrench is made for serious professionals in high torque environment. We use the purest premium Chrome Vanadium steel and a complete 10-step state of the art heat treatment process to make these combination wrenches. The result is a set of combination wrenches that does not break under high torque pressure. Each combination wrench underwent careful polishing and protective plating process to achieve its flawless polish. Constructed longer than standard-pattern wrenches, our wrenches give you more leverage and access to hard to reach areas. The 12-point box end has our WaveDrive design that transfers torque uniformly and prevents damaging and rounding of the bolt. 15-degree angle offset give you knuckle clearance and also helps you navigate in tight spots. A heavy duty, high quality roll up canvas pouch is included to carry these combination wrenches. SAE size: 3/8 in. The Capri Tools Combination Wrench Set meets ASME B107.100 standards.