PART#: BC-DBM-SPRING
THIS LISTING IS BRAND NEW HIGH QUALITY BOBBIN CASE #BC-DBM Series (No Back Lash) SPRING .
Fit for Bernina Q20, Q24 Sit down Longarm Machines.
Please pay attention to the size of the product !
No-Back-Lash brake spring which puts constant , light pressure on bobbins to overcomemomentum. Bobbins stop spinning faster, preventing unraveling or tangling of bobbin thread when sewing operations stop and start.