Drillco Tool's shock absorbers for DTH hammers protect the rotary head by reducing the effect of the energy reflected from the ground. The tool absorbs longitudinal vibrations originated when drilling with DTH hammers of large diameter and with high working pressures, while it also absorbs transverse vibrations originated when drilling large diameters in fractured ground. The shock absorber reduces the maintenance of the rotary head assembly and can be used in any type of drilling equipment. Drillco Tools,