Powerpro Self-Drilling Metal-to-Wood Screws, LB, Green, 10 x 1.5-Inch, ZXL Self-Drilling Metal-to-Wood Screws, Designed for Fastening Steel Roofing to Wood Purlins Used in Post Framing Construction and Plywood or OSB Used in Construction Residential, Produced with Enhanced Corrosion Resistance Coating over Painted Heads, 2.5 Powder Mils with Chromate Sealer, ZFused Amac 3 Zinc Aluminum Alloy Provides Lifetime Red Rust Protection on Head and Washer, transitions threads from fine to coarse to generate superior holding strength on various wood substrates, micro drill point reduces metal shavings that can embed in rubber grommet, starts straight fast finishes, professional drill bit included, 40 year guarantee. Specifications: Color: green. Size: 10 x 1.5 inches. Country of Origin: Taiwan Weight: 4.85 lbs.