Bobbin #2518A.

Bobbin diameter measures 20mm and 11mm thick.

Aluminum bobbins are considered the Top-End “Luxury Bobbins”. They offer less resistance which translates to less drag to the bobbin thread tension.

These bobbins fit Singer models 15-30, 15-88, 15-90, 15-91,  31-15, 44, 233, 237, 239, 331K, 431D, 5102, 5107, 5122, 5123, 5124, 5127, 5522, 5528

We stock many types of bobbin & bobbin cases for sewing machines. Even if you don’t find the one you looking for, it does not mean we don’t have it in stock. Please let us know machine builders’ reference numbers and/or machine make & model and we will find one for you.