Product Introduction The paving breaker model B67C is tools with compressed air as its power.The compressed air is distributed alternatively through the distributi9ng vaive into either end of the cylinder assembily so that the hammer inside is made to carry on a reciprocal motion which impacts the shank of the steel chisel by the tappet drives the chisel into the concrate foundation and makes them split into huge pieces Main Characteristics 1.The pneumatic breaker model B67C is tools with compressed air as its power. 2.The compressed air is distributed alternatively through the distributi9ng vaive into eitherend of the cylinder assembily so that the hammer inside is made to carry on a reciprocal motion.