This OSRAM FSH 125 watts 120 volts bulb has a G 5.3 Bipin base. It is a T3 shape Halogen bulb with a 3200K color temperature with a clear lamp finish. This bulb has a G 5.3 2-Pin base with a 2.223 inch overall length and has a rated life of about 200 hours. The OSRAM FSH bulb is also used inLowel ViP Pro-light fixture