Feed Dog 400-21621 Medium Weight Feed Dog Part Number 400-21621 Trojan Sewing Machines Supply Equivalent Single Needle Lockstitch Machines. Model Jack A4, Jack JK-9100BS-7 and Jack JK-609C Plus Walking Foot Machine Model Jk-6380 & 6380E-3B All with modern designs and the latest technology. All competitively priced.
