Professional Fluorescent 7.5 x 6.25 Magnifier Floor Lamp - Heavy-Duty Roller Stand - 5 Diopter Professional-quality magnifier lamp for medical, cosmetology and manufacturing applications Extra-large 7-1/2" x 6-1/4" rectangular glass lens, optical-quality 5-diopter magnification Two 9-watt fluorescent bulbs produce better working light, more efficient with less heat; UL listed Sturdy five-leg stand with swivel caster wheels for easy mobility with excellent stability 34" spring-assisted flex arm allows exact positioning; adjustable tension & position lock