The OSRAM 7W DULUX S Compact Fluorescent Light Bulb is a tube-shaped lamp bulb with a 2-pin connector. It provides a brightness of 1000-1999 lumens using 7 watts of power at 120 volts. Designed for indoor use, this fluorescent tube has a long lifespan of 10,000-14,999 hours. You are purchasing 1 bulb unless you select multiple when purchasing. The listing offers 12 available bulbs, and I offer combined shipping. If eBay charges more than what it costs to ship the amount you have purchased, i will refund the difference.