Essential oils roller bottles made of high-quality thick glass, corrosion-resistant and durable; with the screw thread design cap, fits the bottle mouth tightly, so there is no need to worry about oil leakage. Each stainless roller balls were polished,cool smooth rolling balls for even oil application,no more rollers getting stuck or falling out. Bright gradient color body of 10ml glass bottle can block UV rays and protect the liquid in the bottle; the internal dosage is clearly visible and you can easily fill it. The roll-on bottle can be reused, tool can help you conveniently remove or install the stainless steel roll ball, and then you can clean, dry and refill easily. 8Pcs 10ml(1/3oz) Glass Roller Bottles with 3 clear funnel. Travel size, you can take it go on everywhere. Great for synthesis oil, essential oil, essence, perfume or other liquids.