I have the Deluxe model and is my "go to" for bobbin winding. Purchased at JAF w/coupon, need to watch as sometimes it is an excluded item listed on the coupon.
fktsewing-Hope this helps---According to the info it will work with: Viking green plastic, Singer Featherweight, Viking groups 2,3, & 4 transparent, Singer transparent 15 J, Singer Class 66 plastic, Singer Class 15 clear, Singer 15 Class metal.
No mention of Kenmore's or the Mega -Quilter.
There are many others listed as well.
I find it works well, one of my better/happier purchases.