Juki Moving Knife B2421-280-000 Juki Lockstitch Bartack The moving knife comes across the sewing thread and closes with the stationary knife to cut the thread. If either blade is blunt / damaged, then the thread will cut short or fray, jam up inside the machine or simply not cut. Part No. B2421-280-000 Trojan Sewing Machines Supply Equivalent Bartacking & Button Attaching Lockstitch Machines. Model Jack JK-T1900BSK All with modern designs and the latest technology. All competitively priced.
