Designed to fasten steel roofing to wood purlins used in post frame construction & plywood or OSB used in residential construction. Produced with coating with enhanced corrosion resistance over painted heads. 2.5 mils of powder with chromate sealer. HWH with V-neck design adds strength & prevents heads from popping. EPDM rubber is vulcanized to a steel washer to form an excellent seal even when driven at an angle. Designed to fasten steel roofing to wood purlins used in post frame construction & plywood or osb used in residential construction Produced with coating with enhanced corrosion resistance over painted heads 2.5 mils of powder with chromate sealer HWH with V-neck design adds strength & prevents heads from popping EPDM rubber is vulcanized to a steel washer to form an excellent seal even when driven at an angle Threads transition from fine to coarse to generate superior holding strength in various wood substrates Micro-bit point reduces metal shavings that can embed themselves in the rubber washer Starts fast finishes straight Pro-stick bit included. Specifications 1 lb Size: 10 x 1.5" Finish: White.