Kosmic Acrylic Urethane Klear UC35 is a 3.5 VOC National Rule and SCAQMD Rule 1151 compliant version of UC-1. It may be used to topcoat any House of Kolor urethane or polyurethane enamels and any Shimrin Base Coat color. In addition: Dries fast and may be color sanded and buffed the next day Preferred clear for first coat before flow coating Preferred clear for motorcycles due to high acrylic content enabling faster cure time and better resistance to fuel spills Includes: 1 Gallon UC35 clear coat Catalyst sold separately If using reducer use RU300 Series. Mix Ratio: 2:1:1 Reducer and Catalyst NOT included. Sold Separately.