Phillips 8" x 2-1/2" Contractor Grade Exterior Screws 100 Pieces. Patented Phillips II drive system with ACR anti-camout ribs will not strip screw heads. Phillips II screw recess is also compatible with both #2 ACR Phillips II and #2 common Phillips driver bits. Stronger shanks reduce screw breakage. Exclusive color matched DuraFast coating lubricates screws for faster driving. Phillips II Exterior Screws are manufactured under exclusive license in ISO-certified factories.