1,best price and high quality 2,environmental ... high brightness.Low heat generating, no UV or IR light radiationSeismic, impact resistance, non-thermal radiation, safe and stable ... 1000 lumens ,but maybe it is less than 1000 lumens)Bulb Diameter: 26mmBulb Length: 600mm±1Color Temp: Pure White ... 20 C~ +80 CLifespan: 50000 hoursMaterial: Aluminum-Plastic 2012hotsell 10W led T8 tuble light,60cm, 3528 SMD