It’s FUN to creating your own nail polish!!!Details: √Application--Perfect for storing nail polish, gel polish, paint, essential oil or other laboratory liquids. Use them for mixing and creating new nail polish colors or textures, adding glitter and much more. √Bottles in white--These glass bottles are opaque, so the gel does not cure inside the bottle. √Mixing Balls--Each bottle has a mixing ball to prevent precipitation and it can work great when mixing new colors. √Funnels--You can easily move nail polish to the bottle with the funnels. √Portable--You can load various colors and carry them at a time to match your different dress styles. Good for travel, business trip or daily usage. Specification: Capacity:15ML Material: Gloss & Plastic Size of empty bottle: 78x30mm/3.07x1.18in(LxW) Size of funnel: 40x35x4mm/1.57x1.38x0.16in(LxMax.ODxMin.OD) Size of mixing balls:4mm/0.16in(Dia) Weight:290gWhat You Get: 6 x Empty Nail Polish Glass Bottles 6 x Steel Mixing Balls 1 x Funnel How to use： 1.Clean them. 2.Use a funnel for filling. The trick is to not overfill the container, leaving plenty of room for the brush. 3.Put the mixing balls in the bottle. 4.Tighten the bottle cap. (If the brush is deformed,bent or branched when you are in use, you can immerse the deformed bristles in boiling water for 1-3 seconds, it will automatically become straight and smooth, and then dry them in the sun.) *if you have any ideas or suggestions on our product, please feel free to contact us, we will give your a satisfactory answer as soon as possible.