DeWALT Galvanised Nails; 20mm x 2.6mm. Nail Type: Common, Shank: Ring, MPN: DCN8901020. Standard nails ideal for concrete. Collated in strips of 15 for rapid, repeat firing. Mechanical zinc plated for indoor or outdoor use. Specifications: Length: 20mm, Quantity: 1005. Fastening: on plastic tape. Head diameter: 63mm. Finish: electroplated. Tilt angle: 15 degrees. Weight: 0.110231131 Pounds.