air cleaning filter is essential for high-quality paint spray gun or pneumatic uptime. Clean air from the compressor of the moisture, oil and dust. Catches fine particles up to 20 microns. At the bottom of the flask a valve to dump the accumulated oils and moisture. Properties filter element is made of foamed metal; Automatic drainage; Rugged metal flask. Air filter placed directly after leaving the compressor. The kit does not include adapters. It has 2 internal thread for connecting with a diameter of 1/2 ".