5LB HG 1-1/2 ROOF NAILSKU: 721044Do itExtra large head aids holding and reduces pull through. For securing roofing asphalt shingles, felt to wood substrates, or insulation board. Hot galvanized for extra long life. 11-gauge.Item AttributesSize: 4d Length: 1-1/2 In. Finish: Hot Galvanized Diameter: 11 ga Head Diameter: 7/16 In. Shank Type: Smooth Head Type: Wide Flat Point Type: Diamond Package Size: 5 Lb.Prop 65 WarningWarning: Cancer and Reproductive Harm. www.P65warnings.ca.gov