(3 PACK) Biohazard Gas Mask Symbol vinyl Hard Hat Helmet decal - size: 2" ROUND - Hard Hat, Helmet, Windows, Walls, Bumpers, Laptop, Lockers, etc. Authentic Brand New Decal Manufactured by StickerDad. Hign Quality Oracal Vinyl. Outdoor or Indoor Use. Eco-Solvent Inks. 100% Made in the USA!