AK Modelling Green Putty is a ready-to-use, one-component filler for clean, dry and grease-free model surfaces. AK describes it as superfine-grained, with high adhesion, no shrinkage and a hard finish after drying. Apply it with a modelling spatula or another suitable tool, then allow it to dry. The green colour is simply the product colour; AK assigns no specialist use or hardness grade to this putty. Apply to a clean, dry and grease-free surface with a spatula or another suitable tool. The formulation is a one-component, water-based polyurethane product and requires no mixing. AK states that it does not shrink as it dries and leaves a hard finish. It can be cleaned up with water. AK describes the product as non-flammable and containing no organic solvents. No hardness grade, drying time or specialist application is published by AK for this putty.