For top hammer drilling, Sandvik rock equipment have been designed in the manner that would affect the rock with the least possible energy loss and most effective energy transmission. In consequence, a good fracture of the rock, has provided a high impact rate and a high efficiency. Sandvik rock equipment provides low cost for the users of top hammer drilling, with its high drilling quality and long service life that is brought by superfine steel, and it is distinguished from its competitors with its reliability.