JamHooDirect 10Pcs, 5Ml Essential Oil Roll on Bottles Refillable Rainbow Glass Roller Bottles with Stainless Steel Roller Balls & Black Caps & Bottle Opener, Perfect for Aromatherapy, FragranceHigh Quality Our rainbow color glass roller bottles are made of high quality glass featuring thickness, smoothness and anti shock. They can prevent essential oil from harmful UV rays to save it from quick volatilization. Prevent Leakage Roller ball are made of stainless steel, which is corrosion resistant and well made. Also, tight fitting lids will prevent any sort of leakage. Therefore, they are very safe to use. With our oil glass bottles, you can