Rearview mirror adhesive is two parts component glue, but notice no mixing of the two parts.it is extra strong and fast acting. It outperforms epoxie and super glue type products.Holds up well in high temperatures and humid environments. Two part structural acrylic system designed to mount rear view mirror. Rearview mirror adhesive kit woks mainly on where rearview mirror broken and brackets to windshield in second. Also can be used to bond metal to metal ,glass to glass, glass to metal, ceramics, jewelry and anything else you can think of.