the advantage of this device is easy operation. 1,this device press spring touch the sequin flat,it reduce the scratch to the sequins ... can be agjustale ,so that it doesn,t hurt the sequin.3. by picking up the pin shaft which fix the ... through the guide andpicker's tip. 1. space of sequin device80mm2. lifting traveking30mm3. sequin embroidery speed : 3mm, 4mm, 5mm 6.75mm,9mm1000run ...