These mini ROLLER vials are a great way to bring your oils wherever you go! They are made of translucent amber glass and are ⅝" wide by 1⅛" tall (with cap). Holds ⅝ dram of oil. Depending on the thickness of the oil, these bottles will hold between 25 and 40 drops. Each package comes with glass vials, stainless steel rollers and caps.