... . 2. auto-feeding. 3. standard. Use:This machine applies in clothing, shoes ,hats,suitcase, waistband, handicraft ... simplify and high efficiency.Characteristic:1. This machine suits to square nail whose length is 4mm ... to the 13mm.2. Feeding guide device automatic feeding,no need manual control.3 ... decreased wear ,thus prolong the life of the machine.4. The working speed, fixed dynamics and ...