Stay organized and wrap with ease using ProWrap Thread Spool Cores, available in three sizes to fit your thread needs: Small Core – Holds 100yd spools, perfect for standard thread wraps Medium Core – Holds 1oz spools for extended wrapping projects Large Core – Holds 4oz spools for bulk thread and production builds Made from durable, reusable materials, ProWrap spool cores are designed to fit power wrappers and hand wrappers, giving rod builders a smooth, consistent thread feed no matter the project size. Features & Benefits: Available in Small (100yd), Medium (1oz), and Large (4oz) Compatible with ProWrap bulk thread and standard spools Works with both power wrappers & hand wrappers Durable and reusable construction for long-term use Ideal for both hobby builders and high-volume shops