This heavy-duty base plate is perfect for steel building erection. It measures 6 inches by 6 inches and is made with 3/8 inch thick steel. The plate has 5/8 inch holes for anchors and is manufactured in the United States by Redman Heavy Duty Products. This unit is sold as a single item and is suitable for use in construction and other industrial applications. Please note that there is no California Prop 65 Warning associated with this product. Buy with confidence and trust in the durability of this high-quality base plate.