【Tape Straight Line Marking】Floor marking machine allows you to simultaneously apply two parallel lines quickly and easily from standing position. Say good bye to back pain caused from bending over while applying tape to the floor. Besides, to paint the masked line using a roller, which eliminates overspray. 【Working Way】Uses two rolls of standard masking tape to simultaneously apply parallel borders quickly and easily from a standing position.a single person is able to quickly, easily and accurately use a standard tape to create clear, crisp and durables aisle markings for fork lift lanes, convention center pathways and hospital aisles. 【Wide Application】The tape line marking tool can be used in basketball,badminton court,PARKING LOT,warehouses, gyms, government buildings and more.Increase safetys for workers and drivers by properly marking restricted areas, speed zones and hazard areas throughout entire facilities 【Adjustable Width】he height of the handle is 80cm,single wheel is 14cm,the total width is 31cm. Maximum width of a single-roll tape machine is 14cm, and the spacing can be adjusted from 4 to 28cm. And there is a long pointer to follow your chalk line. 【Perfects Circles】With the circle attachment, perfects circles are a snap! The telescopic tubing allows for adjustmentsto meet your required dimensions. From Basketball courts to playgrounds, hazardous areas to restricted accesses, the tape marking machine applies the same reliability.