Features: Uv flashlight and UV pen set Our UV pen light set can create an invisible message, and while the ink is invisible in normal light, it can display under a dark light. This sparks their imagination, making it a great addition to any party favor or back to school classroom activity. More occasions: The UV light flashlight mini and disappearing ink pen set not only suitable for birthdays, parties, Christmas, Halloween and various occasions, but also suitable for detecting animal urine, pet stains, food stains, room cleaning, easily verify currency, gas leak checks etc. Specifications: Quantity: 8 Material: aluminum alloy Color: bronze and black Size: (about) Spy invisible ink pen: 5.75 x 0.43 inch Handheld blacklight: 5.24 inch or 3.58 inch Package includes: 4 x Bronze UV torch flashlight 4 x Black light pen Notes: Manual measurement, please allow slight errors on size. Due to the screen display, the color of the item may differ slightly from the picture.