Challenger 2K Slow Hardener 1LT CL680. Automotive Paint. Made by Axalta.
A hardener is a reactive chemical that hardens a 2K top coat by inducing polymerisation. Challenger hardeners are available for every situation and layer, from filler to clear, providing the desired behaviour when you apply a Challenger 2K coat.
SLOW: Recommended particularly for Challenger 2K Clear in hotter conditions and/or larger areas.