Rust-Oleum Professional 15 oz. Clear Inverted Marking Spray Paint 2596838 - The Home Depot
Amazon.com: OMTech Laser Marking Spray, Metal Laser Marking Fluid for CO2 Laser Engravers, 13oz Aerosol High Contrast Black Spray for Laser Engraving Metal, Laser Ink Agent for Aluminum Stainless Steel Brass More