The PRO SOURCE L200A-02N miniature compressed air lubricator with 1/4 NPT port size injects small amounts of oil into the air stream for industrial and professional air systems. Use to lubricate air tools, cylinders, valves, and other air-driven equipment. 1.7 oz capacity polycarbonate bowl. Polycarbonate body is light weight and durable. Seal material is NBR (nitrile butadiene rubber, also known as buna-n). Unit is 5.5 inches high x 1.8 inches wide.