Designed and manufactured to withstand the rigors of its heavy duty users, Snap-on's 18V cordless grease gun, No. CGG4850, offers flexibility even in cold weather; the 7,500 psi hose operates at -5 degrees F. The high-impact nylon housing has durable strength giving it longer tool life. First stage planetary gearing, and second stage steel spur gearing means less wear and stripping of gears.