Harris 102064328 Seriously Good Continental Filling Knives Pack of 4 The Harris 102064328 flexible stainless steel blades are designed for filling small and detailed areas with general purpose filler, fine surface filler and wood filler. Clean with warm soapy water, dry completely before storing. Features: Flexible stainless steel blades for filling small and detailed areas 1 x 2", 3", 3",5" Continental Filling Knives