Introducing the ultimate sewing companion: the Reversible Spool Pin! Compatible with a wide range of Singer Sewing Machine models, this versatile pin features a rounded end (equivalent to spool pin 172007) and an indented end (equivalent to spool pin 173571). Simply flip to fit models like 327, 328, 401, 403, 1247, 1802, 2302, and many more. Upgrade your sewing game with this must-have accessory! ==== FEATURES: ==== (A) **Universal Compatibility**: Our innovative reversible spool pin is designed to seamlessly fit a wide range of sewing machine models. Whether you're working with a vintage classic or the latest high-tech marvel, this spool pin adapts effortlessly, ensuring you never have to worry about compatibility issues again. Just flip and insert to match your machine's requirements! (B) **Dual-Function Design**: Say goodbye to the hassle of multiple spool pins cluttering your workspace. This ingenious spool pin features a dual-function design, allowing you to switch between different sewing machine models with a simple flip. One end fits one type, the other end fits another-it's like having two spool pins in one sleek, space-saving tool! (C) **Effortless Installation**: No more fumbling or frustration-our reversible spool pin is engineered for quick and easy installation. Just insert the appropriate end into your sewing machine, and you're ready to sew! Its user-friendly design ensures a snug fit every time, so you can focus on your creative projects without any interruptions.