Putty Knife, Stiff, Stainless Steel, Blade Width 1 1/2 In, Handle Type Nylon, Handle Material Nylon, Handle Length 3 1/2 In, Overall Length 7 In, Number of Pieces 1 Putty Knives and Painters ToolsStainless steel blades are corrosion-resistant. Carbon steel blades are hardened, tempered, and polished. Brass blades are nonsparking. Blue steel blades are very flexible. Polypropylene tools are lightweight.