1 Ballpoint pen. Type: function pen. Product details may vary slightly due to different production lots. Material: ABS. Product color: silver. Due to the differences between the display and the different lights, the picture may not reflect the actual color of the item.
eBay
Ink visible under UV light Permanent Smudge-proof Waterproof Fast drying ink Bullet tip Nib 1.5 - 3mm .
eBay
1 Ballpoint pen. Type: function pen. Due to the differences between the display and the different lights, the picture may not reflect the actual color of the item. Product details may vary slightly due to different production lots.
eBay
UV light is also useful for detecting counterfeit bank notes. Simply use the pen to make a distinguishing mark and use the UV light to make checks. Invisible ink pens are great for marking all kinds of surfaces and applications, especially paper.
eBay
Ideal for puzzles, security, or creative projects, the ink is only visible under UV light. Fun and functional, these pens are perfect for kids, enthusiasts, or anyone who loves a little mystery in their writing.
eBay
Ideal for puzzles, security, or creative projects, the ink is only visible under UV light. Fun and functional, these pens are perfect for kids, enthusiasts, or anyone who loves a little mystery in their writing.
eBay
UV light is also useful for detecting counterfeit bank notes. Simply use the pen to make a distinguishing mark and use the UV light to make checks. Invisible ink pens are great for marking all kinds of surfaces and applications, especially paper.
eBay
10 UV Light Pens Invisible Ink. High Quality Pens & batteries included. Invisible/Secret ink pen & built in UV light. Security Marker Pen With Ultra. You can write or draw on skin but we do advise you to test it out on a small patch first to ensure it does not cause you any problems.
eBay