Prevent thread snags and tangles: They sit between the spool and the spool pin, cushioning the spool to stop thread from catching or jerking.
Reduce vibration and noise: Especially helpful with larger or heavier spools, they stabilise the spool and keep things quiet and steady.
Ensure smooth thread delivery: By creating a gentle, even path for the thread to enter the machine, they help maintain consistent tension and prevent stitching issues.
Protect your machine: Without the pad, thread tension can spike before entering the machine, which may lead to poor stitching or even long-term wear on internal components.