The MURO® #8 x 1-3/4" Square Drive Flathead Twin Thread Wood Screws are a high-quality product manufactured in Canada. This pack quantity of 2700 screws is perfect for various home improvement projects, particularly in subfloor applications. The screws are made of yellow zinc material and are designed for use with a corded electric drywall screwdriver. It is important to note that this product may contain chemicals, as indicated by the California Prop 65 warning…please email with any questions.. thank you