home-built from a discarded compressor and some scrap steel, this compressor is lots quieter than some newer direct-drive units. air tank is removeable. has a cut-out switch to kick off motor at 115 psi, restarts when pressure drops to 90 psi. painted in "machinery gray" not the biggest, but does what i need it to do. dad built it over 20 years ago, i think the original motor was off a cement mixer.