For composite or PVC decking. The Deck-Drive DCU Composite screw is engineered to provide beautiful fastening results for all types of composite decking while also offering greater ease of installation, a clean finish and superb corrosion resistance. The Deck-Drive DCU is the go-to-screw for all your composite decking applications, eliminating the need to mix and match screws to the decking they are suited for. Available with color-matching painted heads to blend with popular decking manufacturers and to provide a more concealed finish. Deck-Drive™ DCU COMPOSITE Screw (Collated) — #10 x 2-3/4 in. Type 316, Brown 05 (1000-Qty) (Pack of 100).