LaserBond Aerosol Black Laser Marking Spray 100 (12 oz), Works with All Laser Engravers, Printers | CO2, Fiber & YAG Laser | LBT 100 Permanently Marks on Most Metals, Glass & Ceramic - - Amazon.com
OMTech Laser Marking Spray for Black High Contrast Metal Marking 13 oz Aerosol | eBay
CerMark Ultra 12 OZ Spray Can – CerMark Sales
Guard Dog Security Laser Assist Pepper Spray on Keychain, AccuFire, Black PS-GDAFOC181BK - The Home Depot