6-Pack Blue Glass Roller Bottles for Essential Oils - 10ml Royal Empty Bottles with Stainless Steel Roller Balls | Leakproof Roll-On Perfume & Under Eye Serum Bottles | Perfect for Aromatherapy, DIY Beauty & Travel Skincare

The opening of this vial is large enough so that you can even carefully drip oil into it from your essential oil bottles. 2. After filling the bottle with oil from your dropper, place the roller ball in the opening of the plastic insert. Press the insert down firmly until securely in place (try not to push directly on the roller ball itself). Be careful to hold the bottle tightly during this process. 3. Once the desired amount of oil is in the vial and the roller ball is inserted, screw the black cap firmly in place.

1. Hunky Dory Royal 10ml essential oil roller bottles are made of sturdy thick glass. Durable and not easily broken. Thick-walled amber glass protects essential oil against harmful UV rays.

2. METAL ROLL BALLS Stainless steel roller balls. The perfect fit provides even dispensing and smooth roll-on.

3. LEAKPROOF DESIGN Thick plastic seal effectively prevents any leakage.

4. WIDE USAGE Roll-on Bottles are suitable for essential oils, perfume oils, lip gloss and other liquids.