Product Description The product is 5LB 10x3.75 BLK Screw. Easy and simple use kit. The product is manufactured in China.. Elegant design and finish. From the Manufacturer Coarse Threaded Phosphate-Plated Steel Phillips Drive Drywall Screws feature horizontal indentations that help to securely fasten gypsum (drywall) boards to wood studs. Coarse thread screws are more popular, have higher pullout values and are faster driving. Used in commercial applications.