♣ Features: 1.10 pack 5ml gradient color roller bottles with stainless steel roller balls and golden lids. 2.With bottle opener (included), the roller ball can easily be assembled and disassembled. 3.With funnels (included), it will be easy for you to fill essential oils. 4.The portable size is easily fits in your purse and very convenient for traveling. 5.Perfect for natural essential oil, synthesis oil, perfume, essence or other liquids. 6.Reusable: The reusable design makes these Roller Bottles a superior green alternative to pollutant plastic roller bottles and a great option of cash saving. ♣ How to use the Essential Oils Opener:: Step 1: Removing the orifice reducer insert: put the edge of the opener underneath the reducer and push down.Reducer would pop out. Step 2: Closing the orifice reduce insert: Once the reducer pops out, please find the suitable hole in the center of the opener. Then place the right hole on the top of reducer and press down. ♣Package Included: 10pcs x essential oil roller bottles 10pcs x steel roller balls 1pcs x bottle opener 1pcs x funnel