Essential Oil Roller Inserts for 5 and 15ml Essential Oil Bottles. Pack of 8 Stainless Steel Leak Proof with removable snap ring Roller Tops. Great for Oils, Blends, and DIY. - Walmart.com
Stainless Steel Roller & Cap for 5ml/15ml Bottle - Oil Life
How to Attach and Remove AromaGlide Roller Fitments - Recipes with Essential Oils
How to Make an Essential Oil Roller Bottle - Easy DIY Roll-On Blends