Tension Unit, Singer (Vintage Original) - NUMBERED color-multi and the speed is most

and the speed is most desirable when cutting rags and stockings into strips for making rag rugs

and as wide as 15/16 inch

Scotland SINGER plant

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 and the speed is mostOriginal 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