This candelabra lampholder is ideal for any candelabra base bulb. It is rated for a maximum of 1000 watts, 250 volts, and 8.5 amps. The lampholder has 18-gauge leads and two mounting screw holes spaced 1.279 inches apart. Precision Lighting and Transformer adheres to the strictest quality control and quality assurance procedures in the ballast and lamp industry. This Precision Lighting product is tested under the toughest conditions and is meticulously factory checked for defects in materials to reach you in perfect condition.