Material: The spool pin is made of a sturdy and durable material, likely metal, to ensure it can handle the rigors of sewing without breaking or bending. Color: The spool pin is white, which may match the color scheme of your Singer sewing machine or simply provide a neutral color that blends in well with your sewing workspace. Functionality: The auxiliary spool pin allows you to wind additional thread onto a second spool for convenient two-spool sewing. This can be especially useful for sewing with thicker fabrics or for projects that require multiple thread colors. Ease of Use: The spool pin is designed for easy use, allowing you to quickly and easily install it on your Singer sewing machine. This saves you time and frustration when setting up your sewing projects. Safety: The spool pin is designed with safety in mind, ensuring it will not damage your sewing machine or pose a risk to you while in use. It is also likely made of a smooth material to prevent snags or tears in your fabric. 1