Hello dear sir, It is nice to write to you. This is henryroossvelt from Peru. I am interested in this style of Matest Impact Hammer for Rocks and in doing business with you. could you please send me the quotation from this with the details as below: Voltage, measuring Voltage Range, Torque, Do you have any quality assurance certificates? I hope we can cooperate in the near future. regard With Thankshenryroossvelthr2 Show More