Name: DTH hammer Brand: SDTOPS Model: DTH 133 Size: 133mm Matrix material: Steel alloy Life time: 50m~200m Application: Geological exploration, coalfield mining, water well drilling , etc. Applicable formation: Soft and medium hard rocks, like Sandstone, Shale, Limestone, Conglomerate, Mable, etc. DTH Bit is also called Down The Hole hammer bit or DTH button bit. SDTOPS supply top quality and cheap price DTH Bits which diameters ranging are between 76mm to 500 mm. DTH bit face design: Flat face, convex face, concave face. DTH button bit tungsten carbides insert style: hemi-spherical, Parabolic, and Ballistic. SDTOPS DTH hammer bits shank are suitable for: • DHD340A, DHD350R, DHD360, DHD380,DHD112; • Cop32, Cop34, Cop44, Cop54, Cop64, Cop84; • Mission 40, Mission 50 , Mission 60, Mission80; • SD4, SD5, SD6, SD8,SD10,SD12; Numa100,Numa120,Numa125, QL40, QL50, QL60, QL80,March120 etc.