Marxman is a one-of-a-kind tool designed to mark almost any surface with just one push. It’s the perfect drilling partner for electrical work, plumbing work, building work and so much more. Each pen contains over 250 bursts of removable fluorescing green pigment that can be used to mark virtually any surface, from brick to metal to wood to pebbledash to porcelain and ceramics. It’s ideal for drilling holes as deep as 45mm. You’ll never have to worry about broken pencils again or dusty felt tips. It can be used at any angle and even upside down. It marks through fittings at different depths. It accurately shows where to drill. There are 250 sprays in every pen. It is non-permanent.