The Prime HS-99, Plus Clearcoat delivers a High Quality Deep Gloss Finish that is very easy to apply. The water white HS-99 clearcoat offers exceptional flow from the gun for a smooth lay down. HS-99 Plus Clearcoat provides excellent duraility and is resistant to environmental conditions such as sunlight and acid rain. Prime HS-99, Plus Clearcoat mixes 2:1 (2 parts Clearcoat : 1 part Activator.) Prime offers four speeds of activators for the Prime HS-99, Plus Clearcoat to choose from.