there are three kinds of length of the needle:
1. 5 cm
1. 0 cm
0. 5 cm
the diameter of each needle is from 0.07-0.2 mm, there are total 192 pieces of needle on the roller, the distance between two needles is 0.3 mm,
the needle's material is high quality medical rustless steel that import from Sweden, and it's costed under -60℃.
the derma roller have been autoclaved, it can be used 3-5 times,before you use it the second time or next time, you can distinfect it in the disinfectant that our company can supply.
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