The Kent Automotive 2K Epoxy Primer Filler, No. 1677479, is a two-component epoxy that requires no mixing or activation. It simply needs to be shaken and sprayed, and it can be applied directly to metal. Its anti-corrosion formula creates a non-porous barrier to protect substrates from moisture and rust. It offers excellent adhesion and fills in minor imperfections, creating a smooth, paint-ready surface. It has an unlimited pot life.