This type of screwdriver is the kind that was originally included with the box of attachments for each Singer Sewing Machine, including the Singer Featherweight 221 & 222K. Especially useful for adjusting the bobbin case tension on your vintage Singer Sewing Machine. Vintage original stock is limited to what we have available on hand and will vary from week to week.
We have them available in either the chromium or blackside finish.
The teardrop screwdriver and attachments are sold separately.