? Superior Quality ? These Essential oil roller bottles are made of corrosion-resistant glass which makes them thick, smooth, and shockproof. These oil roller bottles for essential oils protect the oil against harmful UV rays to save it from quick volatilization | ? Stainless Steel Roll Balls ? The roll balls are made of Stainless steel, which is corrosion resistant and well-made. The tightness prevents any sort of leakage. With our complimentary opener, the battle can easily be disassembled and filled | ?Dual Caps: The screw thread finish bottle mouth is matched with a plated aluminum alloy cap, which fits tightly and can effectively prevent any liquid leakage. You can also design your essential oil formulations with these adorable bottles to would help you to relax during salon or aromatherapy | ? Portability ?: Comes with a pack of 12, 10ml per bottle. The capacity allows you to store beard oil, Synthesis Oil, Natural essential oil, essence, perfume, dry flowers, or other liquids that meet your needs of daily care for eyes, faces, and body. The packaging makes it perfect for traveling and it easily fits in your purse | ?Package includes: 2 Funnels are provided to fill essential oil easily. You also get 48 stickers to mark and classify essential oils and 4 roll balls for spare, With our Essential oil roller bottles, you can enjoy every moment during massage or beauty salons