This is a TRE6871 X-Solids Activator. QT Spot & Panel Activator Extra Solids Acrylic Urethane Clearcoat Activator are specifically designed for high productivity shops using Transtar Finish-Tec Clearcoats. Activators are suitable for use in clearcoat applications over single-stage topcoats & for base/clear applications (except lacquers) #6871/6874/6877. Spot & Panel Activator is designed for use in temperatures between 65-80o or for spot & panel applications.