This Altex Preferred MFG drywall screws assortment kit contains 165 black steel screws of four different sizes perfect for drywall and wood applications. The screws are corrosion-resistant, with a galvanized and phosphated surface coating for superior protection against rust. The set includes 1", 1-1/4" 1-5/8" and 2" screws and comes in a convenient storage container.