Precautions: Please add water to operate when you drill concrete brick stone The operator should wear protective glasses to protect the ey After long-term operation, replace the accessories to avoid burning the skines, when the face up operation, to wear protective masks
A**R
It is not a good product. I used it and drilled one hole ...
It is not a good product . I used it and drilled one hole through a cinder block and it's teeth got blunted.
