Fas n Tite #8 x 2 1 2 in Bugle Coarse Thread Drywall Screws 5 lb (460 Pack) Item #70030 Model #63948422 Easily create a knockdown texture Easily create a knockdown texture effect by holding a putty knife parallel to the wall or ceiling to lightly flatten knockdown to desired texture and dipping putty knife into water between each knockdown One piece box constructed from high impact A number 2 Phillips head makes the driving of this screw easily ready and the sharp tip screw is great for piercing wood A black phosphate finish on the screw makes them easy to see as well will easily combine with your paint and mudding