★Superior Quality: The Essential oil roller bottles are made of corrosion-resistant glass, which makes them thick, smooth, and shockproof. The oil roller bottles for essential oils protect the oil against harmful UV rays to save it from quick volatilization. ★Stainless steel and Glass 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 ★ Portability ★: 5ml per bottle. The capacity allows you to store beard oil, Synthesis Oil, Natural essential oil, essence, quartz, perfume, dry flowers, or other liquids that meet your needs of daily care for your eyes, face, and body. The packaging makes it perfect for traveling, and it easily fits in your purse.