Marks a fixing point through fittings or fixtures. A unique patented tool designed so that with one push it quickly, easily and clearly marks almost any surface. Simply push the Marxman pen into the fixture hole and a burst of bright green chalk will mark the surface with the required drill hole point. Two types for varying depths. Bright green visible marker. Approx. 250 bursts. Green – Fixture marking depth up to 50mm. Black – Fixture marking depth up to 100mm. Easy to remove. UK designed & manufactured. As seen on TV from BBC’s Dragon’s Den.