Product DescriptionDescription* BJ-01DX Automatic Bobbin Winders are specially designed to produce prewound bobbins with plastic sides for sewing machines use.* It is applicable for different counts of yarn, such as 40/2, 60/2, 75/2 of cotton thread, polyester yarn, high stretch yarn and mercerized yarn.* It is equipped with automatic alarm and tension force controller device with good features of high reliability, low noise, easy-operation, nice pattern of bobbins.* It is the advisable choice for most large