OverviewHIGH QUALITY- ZEJIA essential oils roller bottles are made of corrosion-resistant glass, which makes them thick, smooth, and anti-shock. Not easily susceptible to leaking, scratches, or breaking. So that it could safely store various substances without damage. | UV PROTECTION- ZEJIA amber roll on bottles can protect the oils from UV rays and avoid quick volatilization. It also won’t break down when bottles come into contact with stronger, more corrosive essential oils. | STAINLESS STEEL ROLL ON BALLS- The roller balls are made of corrosion-resistant stainless steel. Roller-on balls can help your skin better absorb essential oils and provide you with a massaging effect, bringing you a unique sense of relaxation! | GOOD SEALING- We adopted a Leak-proof Design," The Built-in Gasket," for our roller ball part to achieve a leakage-proof function. Besides, the screw thread bottle mouth fits the cap tightly, which can effectively prevent any liquid leakage. | GREAT DIY GIFTS- This set includes 24 Packs of 10ml empty refillable roller bottles, 2* transfer droppers, 1 opener, and labels. You can use our essential oil kits to create a variety of your favorite essential oil blends, perfumes, or other liquids!