Upgrade or replace your bobbin winder tension assembly with this genuine Jack 1381300600 Bobbin Winder Tension Assembly, designed for Jack A2, A4, A4S, A5, and F4 industrial sewing machines. This high-quality component ensures smooth and consistent...

Tension Assembly for Jack Flatbed Lockstitch Industrial Sewing Machines   This is a genuine top-quality complete tension set designed for Jack industrial sewing machines. It ensures optimal tension control during sewing operations, promoting smooth...