One of the best selling roofing nailers, the NV45AB2M is extremely lightweight, (only 5.5 Lb.) making it the essential tool for the fast-pace working environment. It features rapid driving and unprecedented quick response with unique cylinder valve firing mechanism allowing you to fire up to 3 Nails per second. The NV45AB2M will fire all standard roofing Nails ranging in size from 7/8 In. to 1-3/4 In. its depth of drive adjustment will allow the user to drive the nail to the desired depth at operating pressure ranging from 70 to 120 psi.