Material: glass bottles body, plastic cap, stainless steel roller ball.Package: 6 pieces of roller bottles,purple, pink, blue, yellow, white, golden.Safe,secure and convenient packaging. High Quality:The glass bottle made of corrosion-resistant glass,anti-corrosion,can be recycle used. Roller ball: Stainless steel roller ball design,helps the skin absorb the essential oils through massage. Portable Size: Small size perfect for traveling, and conveniently fits into your bag and fits in your purse Application:Perfect for essential oils, emulsion,perfume , moisturizing milk or other liquids. Package include: Quantity: 6 pieces Size: 5.5x1.6cm Color: purple, pink, blue, yellow, white, gold Feature: The glass bottle made of anti-corrosive glass, anti-corrosive, can be used recycled. The leak-proof design can prevent large amounts of oil from leaking out and achieve a leak-proof function. Application: The glass roller bottles are suitable for essential oils, aromatherapy, fragrances and other liquids. The portable size makes them fit comfortably in your pocket, purse, purse, backpack or luggage. Capacity: 5ml Bottle material: glass Ball material: stainless steel