This single bulb has multiple uses ranging from signage to photography and it is available in multiple finishes. Included in this purchase is a single T10 halogen bulb. Each bulb has a standard E26 screw base. These bulbs are 250 watt each with a clear glass globe and finish. They are also available in a frosted finish. ‎Dimensions are 3.8 x 1.8 x 8.8 inches.