Good light is necessary for good work and the prevention of eyestrain. I recently went to Harbor Frreight's parking llot sale and bought 2 of the lights below... WOW... the idea was to brighten up my garage. The garage had 2 4' florescent light fixture from about 1972 and they became very dim and eventually wouldn't even light up. I have been looking for a low cost replacement until now. I probably won't be putting a lot of hours on them and haven't used them for 30 minutes since installation so I don't know how durable they are. BUT, WOOOW... they are BRIGHT and aren't that funky color florescents put out. It's like sunlight. They are extremely light in weight, come with a (too) short chain to hand them and take almost no power.