Grog Driller 04 RSP x SPECTRUM. Steel-Tip Squeeze Marker

The Grog Driller™ 04 RSP x SPECTRUM is a limited-edition steel-tip marker that re-engineers the legacy of the Grog Metal Head™. It combines a squeeze marker for flow control with an ultra-durable Steelball™ tip. This permanent paint marker is built to leave an ultra-thick paint mark even on the toughest surfaces.

The Grog Driller 04 RSP x SPECTRUM is the direct evolution of the legendary Grog Metal Head™, re-engineered to address its predecessor's flaws. While the original steel tip marker was revolutionary, it was prone to clogging if left unused. The new Grog Driller™ was rebuilt from the ground up, combining industrial-grade parts with writer logic. This industrial marker retains the core concept of its ancestor—a tool for making marks where others fail—but with vastly improved reliability and performance for the most demanding applications, making it the best marker for rough surfaces.

The key technical innovation of the Grog Driller™ is the fusion of two core Grog® technologies: a soft, squeeze marker and an ultra-durable steelball tip marker. The squeezable body allows the writer to manually regulate paint flow with precision, making it more responsive than the original Grog Metal Head™. Paired with the 4 mm Steelball™ tip—engineered to be extra-tough and virtually indestructible—it moves smoothly across raw concrete, asphalt, and rusty metal. Ideal for writers pushing into surfaces where other markers give up.

Packed with a from-scratch, next-gen Grog Ruff Stuff Paint™ (RSP) blend—heavy-bodied and glue-tacky—this thick, glossy permanent paint marker grips greasy, wet, or dusty metal and plastic for maximum bite where others fail. The result is a dense, high-shine mark that stays put—long-lasting through weather and heavy abrasion—even when rubbed. This SPECTRUM x Grog collaboration is a limited drop of 300 units worldwide, featuring an exclusive custom SPECTRUM-branded packaging in Lamborghini Yellow color.

What is the Grog Driller™ 04 RSP x SPECTRUM?
The Grog Driller™ 04 RSP x SPECTRUM is a limited-edition steel-tip marker. It evolves the Grog Metal Head™ by combining a squeeze marker with a 4mm Steelball™ tip and is filled with all-conditions Ruff Stuff Paint™. A marker built to write on “impossible” surfaces—where other markers fail.

What does "all conditions marker" mean?
It means the Grog Driller™ 04 RSP x SPECTRUM is engineered to write on difficult surfaces where other markers fail, such as rough concrete, asphalt, rusty or greasy metal, and even wet or dusty surfaces without clogging or breaking.

Why isn’t my Grog Driller™ writing? (no paint coming out)
Before the first use of your Grog Driller™, you must unscrew the tip assembly and remove the internal protective seal. Unscrew the tip, remove the inner seal, reassemble. Shake, squeeze the body, and press the tip to prime.

What should I do if the Grog Driller™ tip gets clogged?
If the Steelball™ tip of the Grog Driller™ 04 RSP x SPECTRUM gets gummed up with dirt, simply wipe it clean on a rough surface and continue writing. The design is engineered to push through most blockages.