Arm Length: 2 spring loaded arms each 18" lengths; Table Clamp : Standard "U" screw clamp expands to fit bench up to 2.25" deep; Bulb: SATCO 250 watt infrared heat Lamp. Infrared heat lamp is table mounted with an adjustable swing arm providing for easy adjustment of radiant heat to specimen. The lamp is supplied with a 250W(infrared) heat lamp bulb and a built in reflector. A chrome bulb guard is also provided and easily snaps onto the lamp housing after the bulb is installed. Fits standard 110V AC socket.