Get this Spax #10 x 2 in. T-Star Multi-Purpose Interior/Exterior Screws for delivery. Our patented thread serration technology allows the screw to be driven faster, easier to install, and reduces splitting in wood. No Predrilling in Wood! Unique 4Cut Point design provides a self-drilling feature to prevent splitting in hardwood. T-Star plus drive provides superior bit engagement. Better bit engagement means quicker installation with less effort. Conveniently allows for one-hand overhead driving. Patented MULTIhead countersinks the screw head flush in wood. Heat Treated Grade 5 Durability. Tested under the toughest scenarios to give you confidence in every connection. Requires a T-20+ bit – Included in box. Common applications: Exterior treated lumber, deck board installation, outdoor furniture, play structures, shed construction, 2-by framing connections (not recommended for Cedar or Redwood). Engineered and manufactured in the USA. TER No. 2010-02 – Multi Purpose Fastener Properties Report.