Singer Featherweight Slack Thread Regulator & Screw, Tension Unit, (Vintage Original) fwp Each pin measures 1 3/8

Each pin measures 1 3/8 inches in length

but intermittent with the regular shiny japanned-finished Featherweights during the second production commission date

(The Professional Buttonholer cams / templates are considerably longer

If you wish to have more height variability for your 222

Straight Blade - Ideal for cutting strips

Singer Featherweight Slack Thread Regulator & Screw, Tension Unit, (Vintage Original) fwp Each pin measures 1 3/8This tension unit piece (part 45863) regulates the slack produce by the take up spring. The little screw that holds it on is also included (part 335), which may be chrome or black, depending on stock availability at the time the order is filled. This part fits the Singer 221, 221K, 221J, and 222 as well as the Singer 301.