This compact fluorescent CFL helix spiral is a Plumen 001 is the worlds first designer energy saving light bulb. The energy saving light bulb is a neglected, yet inspiring invention. It uses 80% less energy than the traditional incandescent light bulb, keeps down electricity bills and is better for the environment. It also lasts around 8 times longer. Despite this, we tend to buy them out of moral obligation. To some the problem is the light they give off, to others it is the way they look. Both can be solved. We believe the answer is in the design. Make the light bulb attractive and people will spend a bit more and enjoy a better quality of light and a design they appreciate every day. Glass tubes can be bent in many different shapes so why are there thousands of manufacturers but only three designs? Plumen aims to address the problem.Features a BC-B22d bayonet (22mm) cap base.Need more help in choosing a suitable light bulb? Read our guide Choosing Compact Fluorescent Lamps