Black Diamond's 20 gallon vertical portable compressor features a cast iron, v-twin cylinder pump. Oil lubricated for long life with an easy view oil level sight glass and accessible oil fill. A vertical portable space saving design. The motor is factory wired at 120 Volt and can be converted to 240 Volt applications if needed - simply contact your local electrician. The 10" fully pneumatic tires allow this unit to move easily over rough terrain. The wire form belt guard protects all moving parts. Fully assembled. Equipped with a quick set regulator, tool & tank pressure gauges, and conveniently located on/off. This compressor is certified to UL1450 and CSA22.2 for sale in the U.S. and Canada. | Black Diamond 20-Gallon Oil Lubricated Cast Iron Air Compressor