Durable tip, remains sharp and does not retract under pressure. Sturdy tip – acrylic tip, ideal for uneven surfaces such as concrete. The marker works just as well after 72 hours without a cap. For use on concrete, wood, metal, plywood, and plastic. Can be used on surfaces with oil, liquid, or dirt. Dries quickly – reduces smudging on, for example, plastic. Slim and handy design for easy access in tight spaces. Clip – can be attached to a helmet, pants, or paper. Cap that is easy to remove and replace for one-handed operation. Hole in the cap to attach the pen to a tablet or other equipment. Design developed for a good grip in the hand. * Minimum order is 36 (= 1 pack). Orders larger than 36 products should be placed in multiples of 36 (36, 72, 108…).