... protection,high efficiency ,long life of wearing parts Technical specifications :Y018 Y20 Y24 Y50 TypeLength(mm)Weight(kg)Cylinder dia×Piston ... )Drilling depth(m)Drilling speed(mm/min)Impact frequencey(Hz)Y018 5501858×500.4~0.63≤1.4Ø36~421.5 ... to the author, please do not plagiarize. power tool(Y24,Y018,Y20,Y50) new-supplier free-shipping