Automotive Paint for Honda RP21M, Horizon Grey Metallic Paint Code RP21M, Horizon Grey Metallic for Honda; R&E Low VOC Urethane Basecoat Paint (Clear-Coat is required for gloss and durability); 11 oz Aerosol Spraycan ; Ready to spray (Pre-Reduced) Options: 8 oz can, Pint can, Quart can, or Gallon can.; RP21M, Horizon Grey Metallic for Honda is formulated using R&E Low VOC Urethane Basecoat paint. The R&E Low VOC Urethane Basecoat paint exhibits exceptional color accuracy and excellent coverage and is specifically designed for all Automotive Refinish Applications. Clear-coat is required with R&E Urethane Basecoat Paint for correct gloss and exterior durability. We offer our R&E Urethane Basecoat paint in an 11 oz Aerosol Spraycan, or Ready to spray (pre-reduced) Options: 8 oz can, Pint can, Quart can, or Gallon can.