r7s replacement lamp to replace metal halide To replace R7S metal halide special lamp, Dimension:118*48*30mm r7s replacement lamp to replace metal halidespecial lamp, Dimension:118*48*30mm,Holder:R7SFeatures:1.To replace R7S metal halide2.Energy saving up to 80%3.No mercury,radiation,good for environment4.Good for people's health5.Long life of 50000hours