Features: * Pack of 100 * 20 gauge and thicker metals * No pre-drilling necessary * Screws tap their own threads * Secure fastening and strong holding power * Engineered drill point and flute allow for efficient material removal * Applications: residential steel frame construction, duct work to steel framing, electrical accessories to steel framing, track to stud and stud splicing What"s In The Box: * ITW Contractor Fasteners 21380 Plymetal Screw 10 in. X 1-7/16 in. - 9055013