2-1/2"YLW ZINC SUBFLOOR WOOD SCREW/QUIK DR *Callout Size: No. 8 *Length: 2-1/2 in. *Drive Style: Square *Head Type: Flat *Finish: Coated *Material: Steel *Container Size: 17.42 lb. *Number in Package: 1500 pc. *Product Type: Deck Screws *Thread Type: Twin *Packaging Type: Boxed *Indoor or Outdoor: Outdoor *Quick Drive collated screws combine performance with ease of installation for a variety of residential, commercial and industrial applications. These high quality fasteners are extensively tested to ensure optimum performance in their target applications. Quick Drive screws are specificallydesigned for use in our attachments to ensure problem free system performance. The patented curved collation strips hold the screws up and away from the work surface, making moving and positioning the tool easier. They are also pointed on the inserted end to simplify loading.