U-POL 1 Gallon (4.2 VOC) High Solids High Build Urethane Primer Kit with Standard (60 to 95 F) Temperature Hardener European style multi-function 3 in 1 direct-to-metal primer High build urethane primer with 4 to 1 mixing ratio Excellent opacity and hiding power Can be air dried, low baked or I.R. cured