4 Pkg. of SunSun Lighting SI-XMR16GU10D07-30SV/36 MR 16 GU10 Base LED Dimmable Spot Light, Soft White Direct replacement for 50W halogen GU10 base spotlights Reaches full brightness instantly; Dimmable Contains no mercury or lead???Comparable Center Beam Candle Power to Traditional GU10 Lasts up to 25 times longer & uses up to 79% less energy than halogen lamps 4 Pieces/Pack