Eastwood Fast Etch 16 Fluid Oz
Product Review (submitted on February 23, 2013):
This is a phosphoric-acid based product that leaves behind a zinc coating on steel and iron. Works great at neutralizing light to medium surface rust and is excellent for prepping bare metal prior to painting. Spray and leave on for 30-60 min; do not let it dry. Clean with Acetone or Wax/Grease remover. DO NOT USE WATER!! Heavier rust must be soaked for longer periods. Very pleased with results!