The product is E27 to E12 conversion lamp holder, which is made of iron nickel-plated and material and it is durable and not easily damaged. Iron-nickel plated lamp holder, which has the advantage of strong hardness. Features -Color: Black. -Material: , iron nickel plated -Size: About 5.50X2.50X2.50cm/2.16X0.98X0.98in. -Rated voltage: 220V. -Rated current: 2A. -Heat resistance temperature: 220 degree centigrade. - The bulbs fit into the light socket adapters very easily and each one of the light socket adapters fits securely. - , good electrical insulation, corrosion resistance and wear resistance. - Please make sure that the power supply is disconnected before replacing and installing the unit. - Durable and practical iron nickel-plated and material to make, small size, lightweight, easy to install. - Widely used in garage, hallway, conference room, office, workshops, and exhibitions, etc. Package list: 6 x light socket adapters