These 3" #9 deck screws are perfect for patio and deck construction, as well as any exterior wood construction.
Limited lifetime guarantee against rust and corrosion
For patio and deck construction or any exterior wood construction
Type 17 point reduces need to predrill, prevents wood splitting, and creates faster starts
Countersinking head with nibs helps "seat" screw into material to leave a smooth finish
Star drive system allows for more contact points and prevents bit slipping.