Product under Wholesale, price is discounted according to quantity.Note that we pack the purchased amount together in 1 pack, no separate packing.Note: Advise to avoid using for potent essential oils which can cause plastic parts to expand and the roller ball to drop out. For example:1. Citrus oils - Lemon / Orange / Lime2. Tea Tree Oil3. Lavender4. Clove5. Eucalyptus6. GrapeseedPotent essential oils are advised to use Dropper or Cap and Plug bottlesDimensions:Diameter 2.5cm / Height 7.4cmWith Thick Glass and Metall Roller.- for travel pack of essential oil, essence, perfume and liquids.- With steel roller ball for reduced leaking and smooth application. Steel rollers maintain their round shape better than other materials- Amber bottles to maintain quality of contents and reduce oxidation from lightRefer to photo for comparision of 5ml and 10ml roll on bottles.