Product InformationQuantity: 15Wrench Size: 1-1/8 in.Finish: Yellow Zinc ChromateGrade: 8Proof Load: 150,000Rockwell Hardness: C26-C34 Max.Screw Size: 3/4 in.-10Made In: TaiwanCalifornia Prop 65WARNING: This product can expose you to chemicals including Chromium, which is known to the State of California to cause Reproductive Risk & Cancer. For more information go to www.P65Warnings.ca.gov.