The 10ml Glass Roller Ball Bottle With Black Cap comes with a stainless steel rollerball and standard black plastic screw cap. The slender design and clear glass will instantly transform the look of your product, giving it a professional, high-end look. The straight sides make adding your own branding and easy, whilst the clear glass gives maximum visibility to the product within. This is great for showcasing the natural colour and beauty of your product. The stainless steel ball is encased in a plastic sleeve, which you can simply push into the bottleneck (once filled) to get a leak-proof and airtight seal. These bottles can be used for perfume oils, essential oil, aromatherapy blends.