18ml Non-Carbon Magic Invisible Ink For Fountain Glass Dip Pen for Creative Fluorescent Ink UV Light Gift Stationery (7HH1000420-S) Features: brand new and high quality Invisible ink can only be seen under the irradiation of ultraviolet lamp Ink will come with a mini UV light You can use glass pen, pen, feather pen It's great to draw or keep a diary You can also use it to record some important things, such as passwords or other things, which others find and think are blank Satisfaction Guarantee, please contact me if you have any questions.Thank You WARNING:This product is not suitable for children under 3 years old because of small parts. Color: see the pictures Material:ink Sales Way:Retail, Wholesal,Drop Shipping size: 18ml One Size Length:6.6cm(2.6in) Width:3cm(1.18in) Height:3cm(1.18in) Quantity: Note: If you have big quantity (only need over 50 dollars), please feel free to contact me, I will give you SURPRISED PRICE(The more the quantity, the lower the price), thanks Size For Manual Measurement, there may be a 0 to 2 for cm error, belongs to the normal phenomenon. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: (Without retail package) 1 x Invisible Ink