Grip-Rite® Exterior Fasteners engineered with our exclusive PrimeGuard Plus premium coating are guaranteed for the life of the project against rust and corrosion to prolong the beauty and durability of decks, siding, fences, gazebos and other outdoor projects. Grip-Rite Exterior Screws are built to contractor specs – star drives to quickly engage the included bit, heads that smoothly countersink the coarse thread fastener for a flush finish and a type 17 point to reduce pre-drilling while engaging rapidly with the project material, helping to prevent splitting. Features: Easy Installation Brand: Grip-Rite Manufacturer Part Number: L312ST1R Assembled Product Weight: 1 lb Manufacturer: PrimeSource Building Products Inc., Assembled Product Dimensions (L x W x H): 3.50 x 4.60 x 1.80 Inches