Mitsubishi Walking Foot Machine Anti Spin Spring
MN52A0245
Beehive styled anti spin spring which can be fitted underneath the bobbin in a rotary hook. The spring stops thread from unraveling inside the hook and cause a jam.
Suitable machines:
Juki: LU1508, LU1510, LU2810, LU2210
Seiko: LSW8BL
Typical: GC20606, GC20665
and many others!