Evercoat Liquid Hardener - Many have asked for additional hardener for our line of Evercoat fillers. While over-catalyzing is not recommended we offer this replacement for lost or damaged catalyst. Compatible with Slick Sand, Metal-2-Metal, and Feather Fill G2. For paste style creme hardener order 14064 Evercoat Creme Hardener. These hardeners may not be suitable for other non-Evercoat products.