Senco. Combining the flexibility of a cordless nailer with the power of a pneumatic, Fusion15- and 18-gauge finish nailers use compressed nitrogen to drive the mechanism. The new technology eliminates the drawbacks associated with traditional gas- and battery-powered nailers, including fuel-cell replacement costs, tool weight, and ramp-up times. Fusion’s 18-volt lithium-ion battery can reach an 80% charge in 15 minutes and Reflex Shot technology provides up to 500 drives between charges. 800.543.4596.