The Dynastus T50 Stapler is designed for upholstery projects, suitable for furniture, upholstering, interior trim, roofing felt, shoes-making, TV & stereo grille cloth, & much more. It drives 20 Gauge staples with 0.42 Inch crown from 1/4 Inch to 5/8 Inch length, compatible with Arrow T50, Rapid 140, or Stanley TRA700 series heavy duty staples. The air gun operates at 60 to 110 PSI, 0.5 CFM average air consumption, and has a compact size and weighs only 2 lbs, lightweight and well-balanced for ease of all-day use. Touch-strike security system is safe for the operator. For added convenience, the adjustable exhaust port rotates 360 degrees to direct exhaust air away from the user, rubber comfort grip offers optimum ease of use, and the staple reload indicator window alerts the user when to reload nails.