This leather treadle belt is for old treadle sewing machines and measures between 67"-72". To fit properly, measure the new belt against the old belt, and at one end (the one with no hook) cut away any excess length from the new belt. Puncture that end with a small nail. Install belt hook end through the nail hole end and test for a proper fit. Bend hook after fit is satisfactory.
This will NOT fit a Singer Featherweight.