RhinoCrawler RM-S20 is an extremely torque dense and lightweight choice with exceptional startup! It has more mounting positions, beefier wire retainer, and thicker back iron. RM-S20 is very difficult to produce, and it is currently the smallest size of the 2820 stator, the outer size of the RM-S20 stator 2820 is only 35x32mm! In addition, it adopts a specially customized dual tile strong magnetic design, which makes the motor lightweight and has stronger explosive power on the basis of small size!