The ES1020K is a complete 10 oz. canned-air system with a chromed, surgical steel trigger valve and an integral, extended applicator for hard-to-reach places. The ES1020K is meant for keyboards, circuit boards, surface mount devices, optical surfaces, photo & video equipment & electronic components. The built-in variable control trigger valve is designed for single hand operation and the extruded seamless aluminum cans eliminate contamination. Completely disposable.