This Serger Thread Kit simplifies threading by pairing five 1,093yd spools of quality thread with the same colors shown on the Bernina serger threading charts. As you thread, the matching colors make it easy to follow each path step-by-step and confirm everything is routed correctly. Once you stitch a test seam, the colored threads also make it quick to spot which tension may need adjustment. When you're dialed in, simply tie on your project thread, pull it through, and keep sewing without rethreading from scratch—perfect for classes, training, or self-guided learning on any Bernina overlocker.