Extra Solids Spot & Panel Activator, 1/2 Pint Extra Solids Acrylic Urethane Clearcoat Activators are specifically designed for high productivity shops using Transtar Finish-Tec Clearcoats. Activators are suitable for use in clearcoat applications over single stage topcoats and for base/clear applications (except lacquers). #6871/6874/6877, Spot & Panel Activator is designed for use in temperatures between 65° - 80°F (19° - 27°C) or for spot & panel applications. Product Type: Activator. Activator/Hardner used: 6877 Yes -