The Grog CUTTER 08 BMI is designed for those who want to leave a mark without being noticed in the act. Outfitted with an 8mm polyester Quickflow chisel tip, this marker allows you to drop razor-sharp tags that look sophisticated and clean.
But the real "magic" is inside: it's filled with Grog’s notorious Black Magic Ink (BMI). This invisible, transparent fluid is a ghost when applied, only revealing its deep, dark-brown soul after exposure to UV light (sunlight). By the time the sun comes up and the tag appears, you’re already long gone.
Technical Specifications
Tip: 8mm QUICKFLOW™ Chisel Tip (Durable Polyester).
Ink Type: BLACK MAGIC INK™ (Invisible to Deep Brown).
Volume: 20ml.
Body: Sturdy, pocket-sized plastic reservoir.
Surfaces: Ideal for Plastic, Glass, Metal, and Painted Surfaces.
Feature: Fully Refillable and extremely difficult to buff.
Key Features
Stealth Mode: Since the ink is transparent upon application, it is nearly impossible for bystanders or cameras to see what you are writing in the moment.
Chemical Reaction: The formula reacts to UV rays. Once the sun hits your tag, it transforms into a permanent, dark brown stain that bites deep into the surface.
Razor-Sharp Lines: The 8mm chisel tip is engineered for "Quickflow" action, meaning the ink saturates the nib perfectly for fast, consistent, and sharp calligraphy.
Ultra-Portable: At 20ml, this marker is small enough to hide in any pocket, making it the perfect "everyday carry" for spontaneous sessions.
Instructions for Use
Activate: With the cap securely on, shake the marker well to mix the chemical formula.
Pump: Press the 8mm tip down several times on a test surface until the invisible fluid begins to saturate the polyester nib.
Apply: Write your tag. Remember, it will look wet but clear—don't over-saturate!
Protect: Always snap the cap back on tightly to prevent the alcohol-based solvents from evaporating.
Safety: Use in well-ventilated areas and keep away from skin, as BMI is designed to stain deeply.
Why Choose Black Magic Ink?
If you're hitting high-traffic areas where you need to be discreet, the CUTTER 08 BMI is your best friend. Because it’s an invisible ink that turns into a chemical stain, it is incredibly hard to remove. Even if the surface is cleaned, the ghost of the tag often remains etched into the material.