Our pop topper key tool works with all essential oil bottles including: 1ml / 2ml sample vials, 3ml / 5ml / 10ml / 15ml / 30ml essential oil standard caps and 3ml / 5ml / 10ml roller balls. Also perfect for replacing your roller bottle and orifice caps without damage.multi-colors oil bottle openers with keyring hole and loop for your keychain. Perfect mixing tool for essential oils. Sturdy and lightweight - Easily take it with you in your essential oil box or carrying case.Made of sturdy metal with accurate holes to safely insert orifice and roller caps - even on metal bottles. Never again use your teeth, knives, fingernails, or other unwieldy tools to remove roller bottle or reducer caps.Custom logo is available.Call us for more info!