1. Please bring a hard hat (safety helmet), safety glasses and protective mask. It is also recommended to wear dust masks, ear protectors and thick-padded gloves.

2. Before operation, make sure that the chisel is fastened in the specified position.

3. In general operation, this tool works by vibration. As a result, the screws are easy to loosen, which may cause disassembly or accidents. Therefore, you must carefully check whether the screws are tightened before operation.

4. In cold season or when the tool is not used for a long time, it should be allowed to run for a few minutes under no load to heat the tool.

5. Be sure to stand in a strong place. When using the tool in a high place, make sure that there is no one below.

6. Hold the tool tightly with both hands

7. Don't touch the tool by hand

8. Do not remove your hands when the tool is rotating. The tool can only be started when the hand picks up the tool.

9. During operation, do not point the chisel to anyone present. Serious personal injury accidents due to the possibility of the punch flying out

10. When the chisel bit goes into the wall, floor or any place where wires may be buried, never touch any protected metal parts of the tool, hold the plastic handle or side grip of the tool to prevent the buried wires from being cut and electric shock.

11. Do not touch the chisel nozzle or the parts close to the chisel nozzle immediately after the operation. Because it may be very hot and scald the skin