The Grog CUTTER 08 BPI is the pocket-sized powerhouse that writers have been waiting for. Combining a razor-sharp 8mm polyester QUICKFLOW™ Chisel Tip with Grog’s legendary Buff Proof Ink, this marker is built for high-contrast, permanent handstyles that fit perfectly in your pocket.
Whether you're hitting smooth metal, glass, or plastic, the CUTTER 08 delivers a "classic" look with modern, industrial-grade performance.
Technical Specifications
Tip: 8mm QUICKFLOW™ Chisel Tip (High-density Polyester).
Ink Type: BUFF PROOF INK™ (High-penetration formula).
Volume: 20ml.
Finish: Highly opaque and permanent.
Colors: Available in 4 essential shades.
Surfaces: Optimized for Plastic, Glass, Metal, and Painted surfaces.
Sustainability: Fully Refillable.
Key Features
Sharp as a Razor: The 8mm chisel tip allows for incredible line variation. Use the broad edge for bold, thick strokes or the sharp corner for intricate calligraphy.
Permanent "Buff Proof" Formula: This isn't just standard ink. It is designed to bleed deep into the surface, making it extremely difficult to remove with traditional cleaning agents.
Pocket Perfection: Its compact design makes it the ultimate "everyday carry." It’s there when you need it and invisible in your pocket when you don't.
Quickflow Action: The valve-controlled system ensures the nib is always saturated with just the right amount of ink for fast, fluid tagging without fading out.
Instructions for Use
Prep: Keep the cap on and shake the marker well to ensure the pigment is fully mixed.
Prime: On a test surface, press the 8mm tip down several times until the Buff Proof Ink fully saturates the polyester fibers.
Tag: Apply to any smooth surface. The ink is permanent, so make every stroke count!
Care: Always snap the cap back on tightly after use to extend the life of the tip.
Safety: Contains alcohol-based solvents; use in well-ventilated areas.
Why BPI over BMI?
While the BMI (Black Magic Ink) version is for stealthy "invisible-to-visible" missions, the BPI (Buff Proof Ink) is for immediate, high-opacity impact. If you want your tag to be seen instantly and stay there despite the buff, the BPI is your weapon of choice.

