Durability: The aluminum cover is stronger, has good insulation, good heat resistance and corrosion resistance. .Dimensions: diameter 2.8 cm, height 5.4 cm, diameter of the central hole: 1 cm, outer ring diameter: 4.3cm. .Rated voltage: 250V, rated current: 4A, heat resistant temperature: 180 C. .Application: widely used in various lighting equipment, E14 spiral bulbs, spiral energy-saving lamps and other E14 spiral lamps, used in electrical lighting and brackets of lamps. .Scope of delivery: 8 sets, which can meet your daily needs. As a reminder, as the lampshade and lamp housing have buckles, please do not tighten them before installation, because the lampshade will not be easy to open after tightening. .Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.