Principle of
Hong Bong Rock Splitter

Any object has its own characteristics. Rock and concrete have extremely high external compressive strength, but the tensile strength from the inside to the outside is very small. The rock splitter is designed with the principle of wedge, it can release a great splitting force outward in the narrowest hole. It drives the center wedge to move forward, pushes the counter wedge to spread them apart and the rock is forced to crack.