Packing Include: 30 pack 5ml cobalt blue glass roller bottles with stainless steel roller balls, 10pcs pipettes and 4pcs funnels. And the pipettes and funnels can help you transfer liquid quickly Stainless Steel Roller Balls: The rollers are made of stainless steelwhich is corrosion resistant and well-made. The tightness prevents any sort of leakage Long Lasting: The glass roller bottle is made of high quality glass with Cobalt Blue color, which will protects essential oil against harmful UV rays to save it from quick volatilization Portability: Safe, secure and convenient packaging. The capacity of 5ml meet your needs of daily care for skin and makes it perfect for travel and conveniently fits in your purse Wide Application: These glass roller bottles are perfect for essential oils, perfume oils or other liquids Also would be a great container to store your handmade oil blends