For use with Quik Drive fastening system. Quik Guard coating provides corrosion resistance for exterior and certain preservative-treated wood applications. Shank is designed to withstand the swelling and shrinkage that is common with fast-growth lumber. Rimmed flat-head with nibs countersinks easily and provides a clean finished appearance. Low-torque threads make for easier driving. High-low tip provides cleaner and faster starts. Tan color blends in better with most wood species. WARNING! This product can expose you to chemicals including wood dust which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov -