Singer Fixed Spool Pin Cotton Holder
The spool pin fits the following models:
3709, 3709-1, 3722, 3722-1, 3800, 3810, 3709-1, 3722-1, 3810-1, 3815, 3820, 3820-1, 3825,
3825-1, 3860, 6120, 6510, 6550, 7312, 7322, 7350, 7360, 7380, 992DE
Part Number: E1A1663210