Major advantages of upgrading to this part/product：
(1) Made of 40Cr carbon steel, hardening black treatment,stronger than the original gear, wear-resistance and better transmission.
(2) Double kimi screw fixation makes the gear more stable.

20T：Motor tooth diameter: 5mm, D-shaped motor gear hole, module: 1.0mm, number of teeth: 20T,total thickness: 15mm,tooth surface thickness: 8mm, tooth surface outer diameter: 21.9mm,all motors suitable for this data can be used.

21T：Motor tooth diameter: 5mm, D-shaped motor gear hole, module: 1.0mm, number of teeth: 21T,total thickness: 15mm,tooth surface thickness: 8mm, tooth surface outer diameter: 22.9mm,all motors suitable for this data can be used.

22T：Motor tooth diameter: 5mm, D-shaped motor gear hole, module: 1.0mm, number of teeth: 22T,total thickness: 15mm,tooth surface thickness: 8mm, tooth surface outer diameter: 23.9mm,all motors suitable for this data can be used.

23T：Motor tooth diameter: 5mm, D-shaped motor gear hole, module: 1.0mm, number of teeth: 23T,total thickness: 15mm,tooth surface thickness: 8mm, tooth surface outer diameter: 24.9mm,all motors suitable for this data can be used.

25T：Motor tooth diameter: 5mm, D-shaped motor gear hole, module: 1.0mm, number of teeth: 25T,total thickness: 15mm,tooth surface thickness: 8mm, tooth surface outer diameter: 26.9mm,all motors suitable for this data can be used.

26T：Motor tooth diameter: 5mm, D-shaped motor gear hole, module: 1.0mm, number of teeth: 26T,total thickness: 15mm,tooth surface thickness: 8mm, tooth surface outer diameter: 27.9mm,all motors suitable for this data can be used.

27T：Motor tooth diameter: 5mm, D-shaped motor gear hole, module: 1.0mm, number of teeth: 27T,total thickness: 15mm,tooth surface thickness: 8mm, tooth surface outer diameter: 28.9mm,all motors suitable for this data can be used.

28T：Motor tooth diameter: 5mm, D-shaped motor gear hole, module: 1.0mm, number of teeth: 28T,total thickness: 15mm,tooth surface thickness: 8mm, tooth surface outer diameter: 29.9mm,all motors suitable for this data can be used.

29T：Motor tooth diameter: 5mm, D-shaped motor gear hole, module: 1.0mm, number of teeth: 29T,total thickness: 15mm,tooth surface thickness: 8mm, tooth surface outer diameter: 30.9mm,all motors suitable for this data can be used.

30T：Motor tooth diameter: 5mm, D-shaped motor gear hole, module: 1.0mm, number of teeth: 30T,total thickness: 15mm,tooth surface thickness: 8mm, tooth surface outer diameter: 31.9mm,all motors suitable for this data can be used.

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