Self-tapping screws make for easier and quicker installation by combining multiple actions into one to increase productivity! These screws use designed with a drill point at the tip to pre-drill the screw hole as you go with a “thrilling-like” action (threading & drilling) to eliminate separate drilling, tapping, and installation actions. Crafted of steel with zinc rust-resistant plating, they're ideal for use with wood, metal, or other tough materials. They measure 1/4" x 1” with a 3/8” head. Box of 100.