A high efficiency (HE), 2-part pouring silver system. It produces bright silver on glass in 1-2 minutes. Its components are He-650 S Silver Solution, He-650 R Reducer Solution, and He-650 D Sensitizer Solution. Please refer to TDS and/or application instructions for details on how to apply. Recommended Supplementary Solutions: #87 Degreaser, polishing compound of choice, and mirror backing paint of choice