Singer Hand Sewing Polyester Thread Duo pack of all-purpose polyester thread - 1 white and 1 black The ultimate necessity, spools of black and white yarn can be used for most fabric repairs Each spool contains 150 yards of thread 100% polyester Can be used as hand or machine sewing thread All purpose 100 -percent polyester hand and machine sewing thread Each spool is biodegradable and comes with a " Cut and Lock" feature Both spools contain 150-yard of thread that is colorfast and washable