Marxman Standard Marxman - CDU of 30Marks a fixing point through fittings or fixtures at depths up to 50mm. 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. Standard Marxman CDU of 30 Bright green visible marker Approx. 250 bursts Fixture marking depth up to 50mm Easy to remove UK