1, the rocker arm can be swaying freely, and the line of sight is excellent. It is especially suitable for cutting the real leather. 2, it is necessary to carry out the cutting with the hands button, and the safety is high; 3, the column is equipped with an automatic oil supply lubricating system to reduce wear and prolong the service life; 4, the electronic delay circuit is used to control the lower limit position of the stroke, and the accuracy is high, and the height of the swing arm is adjusted by the handwheel, which is simple, reliable and convenient.