Light Source ‚¬â€œ These light fixtures are approved for a 100-watt bulb although a 75-watt bulb is recommended for cooler operation and longer life. Arm ‚¬â€œ Double arm design with two steel ball joints and a swivel joint to provide an almost unlimited number of positions. Three separate tension control knobs tighten the arm in position to reduce vibration. Bases ‚¬â€œ Clamp Colors ‚¬â€œ Machine Grey Warranty ‚¬â€œ 5 Year
