RY-S90TD is a direct motor without a belt, which is sold in two models, 4 and 5 threads. The 4-thread model of this head stitch is used in knitting and the 5-thread model is used in sewing all kinds of shirts and pants. Suitable uses for sewing delicate fabrics are normal. This helmet is equipped with upper and lower wipers. It also has an LED light with the ability to adjust the light intensity.