1) Blades are made of stianless steel with high hardness, one edge with serrated.
 
2) Real screw work better.
 
3) A good process ensures that the handle will never break.
 
4) Carefully designed to make the scissors more stable in working.
 
5) Any part of scissors can cut off 3 layers of denim at the same time.
 
6) No matter how you cut, the threads of fabric will break off.