Only 1 available
Various round sewing machine belts and bobbin winder rings. The item no. on the Singer new in package is 2125, while the loose belts are marked 5097 and 432 (J.R.W.)The loose belts measure approx. 11" and 11.78"--measured calculating circumference from half the diameter of the belt, so it might be off a bit.
I make use of recycled packing and shipping materials, both to be eco-friendly and to minimize shipping costs. So don't worry--it might have come to you in an old television box, but your item was packed with care to arrive safely on your doorstep.