... machine is wind sewing thread into tube bobbin, can wind shape as cone, columnar, pagoda and pineapple. Sewing thread winding ... used for winding sewing thread into tube bobbin, can wind shape as cone, columnar, pagoda and pineapple.Feature:1. computer ... wheel speed ratio: 30-20004. length correction coefficient: 0.8-1.25. shape: cone, cylindrical, pagoda6. max outside-diameter: Φ1157. head number ...