Challenger 2K Medium Hardener 1LT CL650. 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.
FAST MEDIUM: General purpose hardener suitable for both Challenger 2K HS Primer Filler and Challenger 2K Clear.