The shell is made of cast aluminum material, which adopts precision die-casting molding process
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1. The shell is made of cast aluminum material, which adopts precision die-casting molding process;
2. With internal self-locking device, can be turned on and off at any position;
3. Stainless steel, coating with galvanized inside, and spraying plastics outside, double rust protection;
4. Reduction ratio and torque is designed reasonable, which is more efficient and more convenient.