LOCKER thread for sealing threads 150m Onnline B870606

PATENT:
1. Brake - thread tension control while winding on the thread.
2. Two knives - double, safe and symmetrically placed knives enable right and left handed operation.
3. Specially shaped thread exit enables precise winding control and prevents thread jamming.
4. The ergonomic shape and size of the device enable comfortable long-term operation.