Application
Suitable for shuttle quilting machine bobbin thread.
Features
1. High-speed bearing are used in the machine, the max winding speed can  reach 3800 rpm, and the 8-hour output can reach 3 kgs ( the output varies  with  
    the type of yarn ).
2. Yarn plate added the yarn lock for making automatic knotting. Save installing time.
3. The waxing device and auto oiling device are equipped to make the yarn not easy to break, so that the bobbin shape is even and perfect.
Bobbin Size
| Model 
 | Standard Shuttle Bobbin size (L×W) 
 | Weight 
 | 
| 7# 
 | A:35mm × B:12.3mm(±0.2mm) 
 | 2.4g/pc | 
| 10# 
 | A:40mm × B:14.3mm(±0.2mm) 
 | 4.3g/pc 
 |