Replacement Tension Spring for 15-Needle and 20-Needle Commercial Embroidery Machines

This commercial-grade embroidery machine tension spring is compatible with the upper tension knobs on TC, SWD, MT, and CHT 15-needle machines. For the Marquee 20-needle model, it fits BOTH the upper thread rack knobs and lower tension knobs on the embroidery head. Maintain consistent thread flow and reduce breakage with this essential tension spring replacement.