MTM Chamber Indicator Flags are made of rugged polypropylene right here in the U.S.A. Brightly colored for easy recognition of an empty firearm chamber. Sold as an 8-pack includes four pistol flags and four rifle flags.Features: For semi-auto and bolt action firearms Made of long-lasting polypropylene Long enough to extend well into the bore for added safety 8-pack: 4 pistol and 4 rifle Made in the USA