The 450 gm tall glass bottle with 53 mm Lug Neck is a flint (clear), high-quality, food-grade certified, FSSC 22,000 certified, 100% non-toxic, 100% lead free, and microwave and dishwasher safe. The glass bottle is inert and unreactive and does not leach chemicals into your product. The glass bottle is used to pack and store milk shakes and juices, ketchup and sauces, fresh milk, oils and vinegar, and beverages.