12 point box end allows for fine indexing, helping to improve speed and access. 12 point box end fits 4, 6 and 12 point fasteners. The wrench self aligns with the fastener. Full polish finish provides corrosion resistance and easy to clean surfaces. The box end is countersunk for easy application to the fastener. Anti-Slip Design (ASD) open end. Box end incorporates the TorquePlus™ system. 72 tooth ratcheting mechanism rotates fast with only 5 degrees of swing.