Product Description
Yarn Tension Unit Knitting Machine. Includes Mast, Tension Springs and Support Rod w/guides for later models (1972 year & later) standard gauge.
Fits Studio/Singer/Silver Reed models -SK210, SK218, SK260, SK270, SK280, SK321, SK322, SK323, SK324, SK326, SK327, SK328, SK245, SK360, SK560, SK580, SK700,
Will not fit SK151, SK155 or plastic bed machines model LK100,140,150, 400, HK100 or other plastic bed machines.
Tension Mast Assembly includes Mast, Upper Yarn Guides, Yarn Tension Unit & Tension Springs, Rod and triangle Yarn Guide.
THESE WILL NOT WORK WITH BROTHER KNITTING MACHINES!
Usually ships within 15 days. 
