Small size and light weight Powerful and low rebound force Low noise, high ... Introduciton:Patented Portable Hydraulic Breakers, can efficiently crash on concrete, reinforced concrete, asphaltum, rock, no matter under what condition, terrible ... environment and noise.Character of Patented Portable Hydraulic Breakers: Small, light, easy to movePowerful concussion, slight reboundnessLow noicse, reliable, ...