The RoofPro445XP from SENCO
The 1-3/4″ SENCO RoofPro 445XP’s firing valve and power in, power out feed system is designed to allow the tool to consume 5% less air without compromising on power or speed while delivering consistent drives comparable to standard spring-driven systems. As the tool is fired, the top portion of the firing valve moves up to seal off the exhaust of air. The RoofPro445XP is said to drive 12 nails per second and produces 324 inch-pound force at 100psi. The aluminum housing is described as extremely durable and lightweight with the tool weighing in at 5.2 pounds. www.senco.com