The TEKTON 5/16-Inch Combination Wrench is perfect for mechanics and DIY garage enthusiasts. Constructed from rugged and durable heat treated, drop forged carbon steel with a corrosion-resistant chrome plate and buffed to a mirror polish finish. Precision-machined ends feature a 15 Degree open end and a 12-point box end. The wrench meets or exceeds ANSI specifications and is backed by a lifetime replacement guarantee. TEKTON¬-Take It On.