Metabo's cordless nailer revolutionizes concrete forming as it allows for a massive productivity boost vs. hand driving Duplex nails. Move quickly while building concrete forms and scaffolding with the industry's first, battery only, cordless Duplex nailer solution. Metabo HPT's unique Air Spring Drive System produces a similar feel to using a pneumatic nailer, combined with the power of the MultiVolt battery, this cordless Duplex nailer works all day long, driving up to 16D Duplex nails. Drive up to 900 16D 3-1/2" Duplex nails per charge with the included 2.5Ah MultiVolt battery. For bigger jobs, power up with a 4.0Ah MultiVolt battery and drive up to 1,200 Duplex nails on a single charge!