The Source Four Profile come in polished chromeand has a rotating shutter of 25 degrees. A thermally insulated rear handle makes this lamp safe and easy to use. It also comes wih a positive locking single clutch fixture making the lamp stable and secure.Source Fours can have two indivdual bulbs such as 575W or 750W depending on the wattage required.The chrome Source Fours are also available with 19,26,36 & 50 degree lenses.