10.9 gal (40 L) air spare tank sub tank with tool box included air spare tank 10.2 gal (40 L) and subtank tool box included. By using an extra air tank, you can improve the air output and increase the range of use of air through the air. The air safety valve will spray at approximately 19.8 lbs (9 kg). If using at least 19.8 lbs (9 kg), please secure the valve. Connecting a small compressor in the tank is extremely effective This product is 10.9 gal (40 L) tank, so it can be used with an extra tank for increased output and sustainability. Please understand the air compression and emissions before making your purchase. Regularly drains water from the drain under the tank when using. ■ Air connection outlet: 2-layer opening / air coupler included ■ Air valve opening lever included ■ Pressure meter 2 pieces ■ Maximum pressure specification: 1.2 Mpa (12 kgf/cm2) secure the safety valve (air output adjustment valve included) Please be aware that there may be scratches and dirt on the package as it is imported. Dimensions: Main unit size: Height 23.6 inches (60 cm) x Length 25.2 inches (64 cm) x Width 15.0 inches (38 cm) (units) Contents: 10.9 gal (40 L) air spare tank; Note: 2 layers of air exhaust outlet, with air coupler.