3 ml clear , blue or black New style small octagon glass roller bottle with black cap.
BPA free & thick glass: thick strong glass roller bottles with stainless steel roller balls and full accessories, which is BPA free, refillable, durable, economic, easy to use.
Leak-proof & travel size: leak-proof roller balls & lids, you can take oils wherever you go.
Anti-UV: Healthy pharmaceutical glass roller bottles keep essential oils and perfumes from light and UV Damage.
To protect your precious essential oils, this roller bottles set is leak-proof designed, so the lids is maybe a little tight for the bottles, please kindly help to use more strength to screw it on.
Long-term use of essential oils can slightly corrode the roller bottle plastic insert. So we suggest you to replace the Stainless Steel Roller balls monthly.