DescriptionThe thread from the spools are threaded through the hook at the end of the tall vertical guide, and then they can be normally threaded through the machine as usual. The spool can be fixed to the sewing clip to prevent the spool from being pulled elsewhere during the sewing process and causing tangles.Features-Color: As Shown-Material: Plastic -Size: About 36.00X20.80X11.50cm/14.15X8.17X4.52in - Owning the strong wear and break resistance ability, very durable. - They are the effective solution for tension troubles, bring more conveniences. - They improve and reduce resistance and eliminates chances of sewing thread getting stuck, tangled or broken. - These stands, thus, not only makes life more convenient for you but also makes the sewing. - These bobbin winder machines save a lot of time when you need to get a big project completed quickly.