Li-drill tse tlase li sebelisoa haholo indastering ea kaho, letoto la HFD's QL DTH Hammer Adopt tšepe e ntle ea alloy le ho sebelisa kalafo e thata ho likarolo tse ling, tse lelefatsang bophelo ba hamore ea DTH le ho phahamisa ts'epahalo. Hore na o cheka liliba tsa metsi, likoti tse phatlohileng likoring, merafong ea ka holim'a metsi, ts'ebetso ea ho hlobola mashala, lipatlisiso tsa oli le khase, kapa merero ea kaho e hlokang ho epolloa ha mafika ho hoholo, HFD's QL Series DTH Hammer e ntse e sebetsa.