Use: Wire rollers are used for threaded wire rolls that require vertical support, so the netc. Faster demoulding so that you can use it easily and comfortably and meet your sewing machine use needs Practical sewing machine parts: the sewing machine thread roll holder can effectively replace your old product accessories, making your machine more convenient and faster to use and more convenient with the machine, making it more efficient, it is a multi-purpose plastic bobbin for sewing machines Durable plastic material: the white thread roll pen is made of high-quality plastic, sturdy and durable and has a long service life, has the characteristics of wear resistance and is not easy to damage Powerful function: it can improve your machine, it is a universal plastic bobbin pen for sewing machines Package includes: this set contains 3 bobbin pins, easy to use, easy to install, if the hole of your machine is smaller than the size of the bobbin pin, you can use a sharp blade to cut gently