CHARTPAK-Grumbacher Palette Knife Set. Grumbacher palette knives are made of hard-wearing ABS plastic that won't corrode or rust. Each tool is lightweight and easy to handle, solvent safe and easy to clean, and has a large, easy-to-hold handle. Use these knives for mixing, impasto techniques, and multi-media needs. This package contains six tools (Trowel, Large Painting Knife, Small Painting Knife, Painting Spatula, Large Palette Knife, Small Palette Knife). Each tool measures approximately 10 inches long. Imported.