Powered by interchangeable, 7.2 V NiCd battery and fuel rod, Model NR90GC drives up to 2 nails/sec and 1,000 nails/hr. Battery fires over 4,000 nails/charge and each fuel rod fires 1,200 nails. Six-nail lockout function prevents accidental dry-fire, ensuring nails are lodging securely. Nailer with adjustable depth-of-drive nosepiece uses clipped-head nails up to 3½ in. x 0.131.