Altho the post, for the Hook Drive Gear Set 103361AS, reports it will fit my SINGER model 6110.
I had trouble getting the horizontal gear on it's shaft.
After forcing the gear up far enough to mesh with the vertical shaft gear.
The machine to sewed a few seams, but stopped sewing.
Frustrated I bought a pair from China which fit perfectly.
The Chinese gears are steel and cost 1/4 what I paid here.
From attached photo.
- original worn gears on the right
- new Chinese gears on the left.
The machine is sewing beautifully again.
I'll keep the nylon gears in case I need them in the future.
As I suspect they will work successfully. But will take some futzin', to make them work.
Hence the 4 start review.