... until the end of sewing6. This function automatically and adjust the tightness between the pins into the ... as in big thread, can spare extension rod and wire drum shaft connection, set into the thread ... all kinds of fabrics, speed, and large sewing machine.3, built-in alloy gear and durability of the chain, ... Use the machine sewing design handkerchief, apron, pillowcases and so on, don't have a taste;3. ...