The Freeman PCTN64 pneumatic concrete T-nailer drives 14-Gauge collated concrete "T" nails ranging 5/8 inch 2-1/2 inch L. The Freeman Concrete T-Nailer is designed for wood to concrete/steel applications. A lightweight die-cast aluminum body maximizes productivity by reducing operator fatigue while the anodized aluminum magazine and trigger safety lock to prevent accidental firing. Applications include furring strips, plywood to concrete nailing, wire lathe installation, steel banding, decking, fencing, subflooring and more. Density of concrete varies according to age, newer concrete being more penetrable, therefore age may dictate the depth a nail will drive through the concrete. 2-1/2 inch nails are recommended for wood to wood applications only.