Features: • Suitable for knitted fabric; produce marks on collar bottom for accurate attaching to shirt body; improved product quality • Pneumatic control: fast and swift action and high efficiency • Adopt erasable marking pen (3 pieces supplied with the machine) and the mark will disappear within a certain time so that it will not contaminate the fabric. The time for mark disappearing depends on the type of pen • Notching distance can be adjusted at will; easy to change the erasable marking pen Product Details: Operation video: