Metal to Wood Self Drilling Roofing Screws Powerpro, LB, 10 x 1.5 in, Polar/Bone/Regal/Oyster White, Metal to Wood Self Drilling Screws, Designed for Fastening Metal to Wood Roofing Steel to Wood Purlins Used in Back Framing Construction and Plywood or OSB Used in Residential Construction, Produced with Enhanced Corrosion Resistance Coating over Painted Headers, 2.5 Powder Mils with Chromate Sealer, HWW H with Neck Design V-shaped Adds Strength and prevents heads from breaking EPDM rubber vulcanizes to a steel washer to form an excellent seal even when riding at an angle Threads go from fine to coarse for strength Superior holding on various wood substrates, micro drill point reduces metal shavings that can embed in rubber washer, starts fast straight finishes, professional drill bit included. Specifications: Color: white. Size: 10 x 1.5 inches. Country of Origin: Taiwan Weight: 4.7 pounds