Threading your sewing machine from WeAllSew 1620 x 1080 23
https://www.bernina.com/en-US/Accessories-US/Sewing-Accessories/Supporting-Sewing-Accessories/Multiple-spool-holder-extension
https://www.bernina.com/en-US/Accessories-US/Sewing-Accessories/Supporting-Sewing-Accessories/Multiple-spool-holder-extension