Alvin 12 oz Lab Metal Durable Economical Repair Putty, Dent Filler & Patching Compound Epoxy 12 oz Ready-to-use metal repair putty, dent filler and patching compound Used to smooth over rough welds and is easily sanded Designed to be a durable metal filler for fast and permanent repairs Spreads like paste and hardens quickly into metal Lab-metal is Easy to Use, Thin to Brush or Spray, Bonds Permanently, Durable, Efficient Economical