150R40/FS ÌÎÌ¢Ì´Ì R Shape Long Life 20000 Hour - Aero-Tech Light Bulb - Description: 75w R30 Pure neodymium glass full spectrum - Voltage 120, Wattage 105, Base E26, Shape R40, Life Hours 20,000, Manufacturer: Aero-Tech Light Bulb, Overall Length (mm) 165.1 They use a heavy duty 5 point filament as well as a heat reflective disk with a mixture of gases to create light bulbs that last up to 26 times longer than the average everyday light bulb. 150R40/FS ÌÎÌ¢Ì´Ì R Shape Long Life 20000 Hour - Aero-Tech Light Bulb