This Precision Lighting EG360-71 end mounted CFL socket adheres to the strictest quality control and quality assurance procedures in the ballast and lamp industry. Rated for 660 watts, this CFL lampholder is for use with a 4-pin 2G11 base. Each Precision Lighting product is tested under the toughest conditions and meticulously factory checked for defects in materials to reach you in perfect condition.