Kreg Zinc Screws are a good choice for a wide variety of indoor projects with limited exposure to the elements. Zinc screws provide adequate rust protection, and serve as an affordable alternative to our more protective Blue-Kote™ and stainless screw varieties.Available in a variety of sizes, thread options, head style KREG SML-C4X400-75 - XL Pocket-Hole Screws - 4" - 75ct.