(Pack of 4) 26 Watt Double Tube - GX24Q-3 (4 Pin) Base - 3500K Neutral White - CFL Light Bulb. GX23 Base:Plug-in CFL sockets are designed to only work with one style of pin base to ensure the correct light bulb is used to match the ballast in the fixture. So make sure that the base (GX24Q-3) matches exactly to your fixture socket as this will only work with this specific base number and will not interchange with other base/socket numbers Energy Saving:Save 70% on your monthly electric bills with these 26 Compact Fluorescent GX24Q-3 bulbs that are as bright as the traditional 100W incandescent bulbs but consumes less energy.Color Temperature 3500K:This 35K Neutral White color temprature is more neutral and gives out a cool clean look and works well for task lighting in kitchens, bathrooms. It is perfect throughout your home and can be used in your desk/table lamps, floor lamps, and open pendant fixtures.Long Life:This 26W compact fluorescent bulb offers a long life compared to a regular 100-Watt incandescent bulb which makes it a maintenance free option to light your house or any lighting application.These 4-pin CFL bulbs are designed to be an exact replacement for major brand bulbs like Sylvania, GE, Philips etc. They are made with great care and quality at a fraction of the cost of the major brands while not compromising the quality or the lifespan of the bulbs.