Please Note: the pens are not refillable! Color: Clear Transparent Material: PP Plastic Size: approx. 4.8x0.6 inch Capacity: 5ml Quantity: 30 pcs Style: Pen Suitable for: Filling lip gloss, nail nutrition oil, essential oils, nail polish, eyelash growth, perfume, etc. Package Contents: 30 Pcs Empty Twist Pens Usage Steps: Please filling with liquid and then installed the white brush tip, through twisting the pen, you can make the liquid on evenly and paint where you need it, After use, remember to cover the twist pen cap. Note: 1. This twist Pen is not suitable for filling acid alkaline or higher alcohol concentration liquid 2. Do not twist the pen to the up top, it will be unable to twist back for filling once twisting to the top 3. After using, remember to cover the nail pen cap.