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 the more protective Blue-Kote and stainless screw varieties. 1-1/2 in. zinc pocket-hole screwsFor pocket hole joineryMade of steelZinc-plated coating and dri-lubed finished for easy drivingLarge-thread diameter for great holding powerSelf-tapping auger point eliminates pre-drilling