TAPE STRAIGHT LINE MARKER: The floor marking machine allows you to quickly and easily apply two parallel lines at the same time from a standing position. Say goodbye to back pain caused by bending over while applying tape on the floor. Also, using a roller to draw masking lines eliminates overspray. ADJUSTABLE WIDTH: The handle height is 80cm, the single wheel is 14cm, and the total width is 31cm. The maximum width of a single-roll tape machine is 14cm, and the spacing is adjustable from 4 to 28cm. There is also a long pointer to follow your chalk line. HOW IT WORKS: Use two rolls of standard masking tape to quickly and easily stick parallel borders at the same time while standing. A single person can quickly, easily, and accurately use standard tape to create clear, crisp, Long-lasting aisle markings for elevator aisles, convention center aisles, andaisles. PERFECTLY ROUND: With the round attachment, perfect round is a breeze! Telescoping tubes allow for adjustments to fit your desired size. From basketball courts to playgrounds, hazard areas to restricted access, tape markers are built with the same reliability. WIDE APPLICATION: The tape line marking tool can be used in basketball courts, badminton courts, parking lots, warehouses, gyms, government buildings and more. Improve worker and driver safety by properly marking restricted, speed and hazard areas throughout your facility.