... , easy to adjust, appearance strong, even amateur can also in a day to master the techniques and learn to adjust. 2 ... , tape pull round with take up on prevention device. 4, double automatic feed device and auxiliary send gum rubber components. 5 ... a yarn Yarn of a device. 7, stop lights. 8, computer automatic speed control system. 9, automatic oil pump. K-400-B8 multi-function ...