Tension Unit, Singer (Vintage Original) - NUMBERED color-multi be sure to give your

be sure to give your motor a complete cool-down rest

NOTE:  Thumb nut is not included

Basic Attachments in Original Box:

Part 170160 requires a gib screw that has a 90 degree angle where the head meets the shaft

Tension Unit, Singer (Vintage Original) - NUMBERED color-multi be sure to give yourOriginal Singer Tension Unit for the Singer 221 and 222 Sewing Machines. Slack Regulator sold separately. It really is a matter of ease and preference, but if your old Singer Sewing Machine, including but not limited to the Featherweight 221, has one of the old style Tension Units then you might consider the option of switching it to a numbered tension unit. You can replace them with an original from another old Singer Featherweight machine, which is