1. Shock absorption design at the front part ensures stable work and no break. This design is protected by national patent Dept.
2. NSK bearing, the max power of rotor can reach 2300W. This helps increase work efficiency.
3. Switch handle with Hexagonal head locked can ease the shock to protect the handle without break.
4. The impacting part is made of special materials, durable, no break
5. Applications: large-scale building,highway, bridge with heavy duty.