1.¸¶Âû·ÂÀÌ ÁÁ¾Æ ½½¸³À» ¹æÁöÇϵµ·Ï °í¾ÈµÇ¾îÀÖÀ½.2.Áß·®ÀÌ °¡º±°í ³»±¸¼ºÀÌ °ÇÏ¿© ±â°è¿¡ ¹«¸®°¡ ¾øÀ½.3.Á¡º¸ º¸ºó¿ë¹Ú½º ¿î¹Ý±¸±Û ÀÌ¿ëÇÏ¿© À̵¿¿¡ Æí¸®.4.º»Ã¼Ç¥¸éÀ» ºÎ½Äó¸®Çؼ¹Ì²ô·³À» ¹æÁöÇÔ.1.Prevent slipping by good friction power.2.Overstrain to machine is not happen. because weight is light and duribility is strong.3.Convenient to carry by jumbo bobbin's box snd carrier.4.Slipping is not occur by implantation in the surface of body.