A must have if you have any intent on using acid base wheel cleaners, solvents or other heavy chemicals. Very durable thanks to viton rubber piston washers. Heavy duty design extends product life cycle when used with acid solutions. It has up to 40% greater output per stroke, up to 1.5 cc/stroke. This can greatly reduce the number of times you pull the trigger, saving time and energy to complete all kinds of jobs. Industrial standard outer body design prevents trigger piston damage during use or storage. Great for use in auto detailing, car washes, body shops, and any janitorial cleaning that requires strong chemical and acid resistance. Made in Taiwan.