... ,Zinc,Yellow Zinc,Packing: Rugular Collated Screws Screw Types: Drywall Screw, Chipboard Screw, Subfloor Screws, and Decking ScrewHead Types: Bugle Head, Double Countersunk Head, CSK ... .Coating: Black or Gray Phosphated, Zinc Plated, Decromet, Ruspert,Screw Guns Types: Hilti, Makita, etc This is Just an brief introduction to ...