Singer Bobbins, Class for 25+ Models, #172222

Running low on bobbins mid-project is one of the easiest interruptions to prevent. This 10-pack of Class 66 clear drop-in bobbins gives you a ready supply of properly sized lower-thread carriers, so you can pre-wind several colors or thread weights and swap them in seconds rather than stopping to rewind a single bobbin. The clear body lets you monitor remaining thread at a glance, and the consistent dimensions ensure smooth seating in the bobbin case and steady, even thread delivery through every stitch.

These Class 66 bobbins are engineered specifically for the Singer Class 66 bobbin system and span a wide range of Singer machines -- from vintage models in the 66, 99, 185, 201, and 401 families through modern computerized and heavy-duty lines including the HD102, HD110, and CG series. White sewing machine models 8600 and 8800 are also confirmed fits. Alternate part number 32522. Always verify against your machine manual before ordering.