The roller ball is made of metal with corrosion resistance and excellent production. The tightness of the insert prevents any leakage while the roller ball makes it easy to apply the oil evenly, no more rollers getting stuck or falling out <br> <br> Solid,contains no toxic substances.Safe, secure and convenient packaging. Perfect for travel, and conveniently fits in your purse.<br> <br> With metal ball rolling, the built-in liquid uniform smear on the skin, and has a certain massage effect.<br> <br> Long Lasting: The glass roller bottle is made of thick glass.<br> <br> Material:plastic,glass,aluminum;Size:approx 18*109mm/0.7*4.3inch(without lid).Capacity:10ml<br> <br> Color:clear bottle+golden lid/black lid/silver lid<br> <br> Package included:5PCS 10ml Clear Glass Slim Roll-On Bottle with Stainless Steel Roller Ball and Cap