The Bobbin Case (Part #801244) is a genuine JACK original replacement part designed for JACK A4, A5, A5e and JK-5550 series lockstitch machines, as well as Speedway Ai4, DDL8000A and Juki DDL8700-7, DDL8000A series models. Manufactured to OEM specifications for precise fit and reliable performance. Equivalent Part Numbers JACK: 801244 Compatible Machines This part fits the following industrial sewing machine models: JACK: A4, A5, A5e, JK-5550, Computerized lockstitch machine SPEEDWAY: Ai4, DDL8000A, DDL8700C JUKI: DDL8700-7, DDL8000A, DDL900, DDL9000 SIRUBA: DL7200 Technical Specifications Brand JACK Part Number 801244 Part Type Bobbin Cases Condition New – OEM Original Looking for a replacement bobbin case for your JACK A4 or A5 lockstitch machine? This genuine OEM part is also compatible with Speedway Ai4, Juki DDL8700-7 and Siruba DL7200 series machines. Shop with confidence — all parts ship from Miami, FL. ⚠️ Compatibility Notice: Always verify your machine model and subclass number before ordering. Part numbers and compatibility are provided as a reference only. Supra Sewing is not responsible for purchases made without confirming compatibility with your specific machine. All sales on replacement parts are final.