60 Single Class 60 Double Class 90 Single Class 90 Double Class 115 Single Class 115 Double Class 140 Single Class 140 Single Class 180 Single Class 180 Single Grade 180 Double Level 180 Double stage 180 Single grade speed ratio 3 ~ 10 indicated
The hardness of the tooth surface:
The face of the hard teeth.
Layout form:
The coaxial type of the
Level of progression:
Level 1 Level 2 Level 3 Level 3
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Items weight estimation 0 g, subject to actual weight
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