The Kreg SK03 is 675-Piece Pocket Hole Screw Kit. The kreg kit contains five of Kreg's most popular self-tapping screw sizes for Pocket-Screw Joinery, in a durable easy-to-carry case. Kreg SK03 screws feature a deep #2 square drive, a needle-point self tapping tip, and a case hardened design built for strength.