Thomas Compressors T-617HDN 4 Amp 1/2 Horsepower 2 Gallon Oil-Free Hot Dog Compressor Super quiet (60 decibel) long-life compressor ideal for use with any finish gun or brad nailer Perma-Lub design provides maintenance-free operation and quick cold-weather starts 1/2 HP motor that delivers .90 cfm at 100 psi Low-current draw won't blow standard 15 amp house circuits Tank has 2-gallon capacity; measures 16.5 x 8 x 16.8 inches (length by width by height).