Originally Posted by
garage sale GT
Make sure it's a cassette, not a freewheel. Those only go down to 13t in the rear, but a 13t smallest sprocket alone doesn't make it a freewheel.
Actually not. I have a 7-speed freewheel, 11-30. It's either Taiwanese or Chinese made. It's difficult to see any markings on it, but I'll check when I can.