Provide big holding power for big projects with Kreg's Pocket Hole Screws. Kreg Jig® HD Screws are optimized for use with the Kreg Jig® HD and 11/2" and larger stock. These large hardened-steel screws provide incredible shear-resistance, and have a Protec- Kote™ finish with three anti-corrosion layers for long-term moisture resistance. Use a #3 square driver with these Pocket-Hole Screws. They're available in a 4" length that offers superior holding power in 4x4 boards as well as 2½"-long screws (previously known as HD Pocket-Hole Screws) for building with 2x4 boards.