Flat car shuttle core sleeve Key benefits Compact and lightweight design makes storage and transport easy for hobbyists and professionals. Compatible replacement for ordinary flat car shuttle core sleeve and bobbin case parts to extend the life of household sewing machines. Metal bobbin with shrapnel provides a sturdy, wearresistant component for reliable thread supply during sewing. Simple swapin replacement reduces downtime and keeps machines ready for use. Features and attributes Function: Serves as a core sleeve and bobbin case replacement for flat car shuttle systems on ordinary household sewing machines. Compatibility: Designed to fit standard household sewing machines that use a flat car shuttle bobbin and bobbin case configuration. Size and weight: Reasonable size and light weight for convenient storage and easy carrying to classes or appointments. Material: Bobbin and shrapnel are metal, offering durability and resistance to deformation under normal use. Performance: Enables steady bobbin handling and consistent bobbin placement in the case when installed correctly. How it solves common problems Replaces worn or damaged bobbin cases and sleeves to restore correct bobbin seating and reduce the need for more extensive repairs. Provides a durable metal bobbin with shrapnel to maintain stable thread tension and help reduce interruptions caused by bobbin irregularities. Compact spare parts make it easy to keep a backup on hand, minimizing downtime during projects. Practical use scenarios Home sewing repairs: Keep a spare core sleeve and bobbin set on hand to a worn component during a garment alteration session. Sewing classes and workshops: Carry lightweight replacement sleeves and bobbins to maintain multiple machines and avoid losing class time to part failures. Small tailoring or alteration : Use as routine replacement stock to quickly service householdstyle flat car shuttle machines and keep production moving. What to expect A functional, ordinary flat car shuttle core sleeve and metal bobbin with shrapnel suitable for household sewing machine maintenance and replacement needs. Easy to store, transport, and install as part of routine equipment upkeep.