Grog Driller™. The evolution of Grog Metal Head™
The Grog Driller™ is the re-engineered evolution of the legendary Grog Metal Head™, designed to write on any surface, in any condition. Where others fail, Driller writes. This steel tip marker combines the architecture of a squeeze marker body for flow control with an ultra-resistant Steelball™ tip. It is a permanent paint marker loaded with high-adhesion, high-thickness, high-stickiness paint, built to leave a mark on any surface, in any condition.
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The Grog Driller: The All-Conditions Marker.
The Grog Driller™ is an all-conditions marker, a tool designed to perform where standard paint markers fail—exactly like its predecessor, Grog Metal Head™.
Its hybrid architecture unites two key Grog® technologies: a soft Squeezer™ body and a Steelball™ tip. Loaded with the high-viscosity Grog Ruff Stuff Paint™, it is engineered to adhere to difficult surfaces: rough, greasy, rusty, wet, or dusty. It is the ultimate tool for tagging in extreme conditions, where tip durability and paint adhesion are critical factors.
From Metal Head to Driller: the Steel-Tip Marker Legend.
The Grog Driller™ is the evolution of the first Metal Head Marker™, launched in 2011. The original Grog Metal Head™ was a revolutionary idea: mounting an industrial-grade steel tip on a marker. It was a powerful tool, but its fast-drying paint could cause premature dry-out, even after short periods of inactivity. Grog® pulled the product, listened to feedback, and re-engineered it from the ground up. The Driller™ retains the core concept of an all surface marker for writing anywhere but with vastly improved reliability and control, solving the technical issues of its predecessor.
The Steelball™ Tip of the Grog Driller: Ultimate Durability
The tip is the heart of the Grog Driller™. Unlike felt nibs, the 4 mm Steelball™ is a galvanized steel ball tip that is nearly indestructible, wear-resistant, and scratch-proof. This technical feature allows it to perform on surfaces that would destroy any other tip. It glides over raw concrete or asphlat, scrapes through rust on metal, and cuts through grime, creating a groove that the paint immediately floods. This mechanism makes it ideal for concrete marking and metal marking, ensuring consistent performance on any rough surface.
The Squeezer™ Body of the Grog Driller: Precision Flow Control
The Grog Driller™ utilizes a soft, squeezable body directly inherited from the Grog Squeezer™ technology. This design translates hand pressure into precise paint flow control. a light grip produces a defined stroke, while a harder squeeze forces more paint into the tip for a thicker, drippier line. This manual delivery system is crucial with the high-viscosity Ruff Stuff Paint™. It lets you meter the feed by hand—light pressure for tight, clean cuts; a firm squeeze to flood the tip for thicker, drippier lines that bite into rough surfaces and fill their texture (asphalt included). You have to try it to get it.
Grog Driller's Ruff Stuff Paint™: A High-Thickness Formula
The Grog Driller™ is loaded with Grog Ruff Stuff Paint™ (Grog RSP), an updated all-conditions formula, built to write anywhere. It is a high-adhesion, high-thickness, and high-coverage permanent paint marker formula, specifically tuned to adhere to difficult surfaces such as asphalt, raw concrete, and metal—even when wet, oily, or rusty. The mark is thick and substantial, sitting proud of the surface to create a signature line no other marker can deliver. It performs best on rough substrates, flooding and keying into the texture—filling cavities and gripping on for unmatched durability, exceptionally hard to buff. The first release of this marker is the limited Grog Driller™ 04 RSP x SPECTRUM edition.
Conquering Rough, Rusty, and Wet Surfaces with Grog Driller
The Grog Driller™ is the best marker for rough surfaces because it works as a system. The Steelball™ tip is metal-on-surface: it bites into extremely abrasive substrates—up to raw asphalt—scraping through grit so the paint can anchor, without shredding the tip or splitting the marker as many others would. The soft Squeezer™ body turns hand pressure into flow control: keep a light grip for clean, defined cuts; squeeze harder to push more Ruff Stuff Paint™ into the pores, filling cavities and leveling peaks; go heavy in vertical use to trigger controlled drips on demand. The high-solids Ruff Stuff Paint™ then keys into the texture and holds—even on wet, oily, or rusty metal and raw concrete. This combination makes it a true wet-surface paint marker and a go-to for writing on rusty metal. First passes can look irregular on coarse ground—that’s the Driller’s signature: a thick, raised line built to last.
How is the Grog Driller™ different from the old Metal Head™?
Only the Steelball™ tip is the same. What changes is everything around it: a new, soft Squeezer™ body that gives true pressure-based flow control, and a new formula that fixes the Metal Head’s fast dry-out, grips even harder to rough or contaminated surfaces, and lays down thicker, more substantial lines.
Is the Grog Driller™ refillable like Grog Squeezer™?
Yes, but it's optimized for high-viscosity paints like Ruff Stuff Paint™. Using thinner paints may compromise its performance. Grog has developed the dedicated Buckshot™ refills. These are replacement paint bodies; you just unscrew your used-up body and screw the fresh one onto your existing Driller™ tip.
How do I get the last drops of paint out of the Grog Driller™?
To use the paint to the very end, hold the Grog Driller™ vertically (tip down) and continue to apply firm pressure to the body. This will force even the last drops of paint to flow into the Steelball™ tip.
Can the Grog Driller™ write on wet or oily surfaces?
Yes. The Grog Driller™ is specifically engineered for this. Its steel tip can cut through the layer of grime or moisture, while the Ruff Stuff Paint™ formula is designed to adhere even in these difficult conditions.