DTH Hammer Bits RockSmith supply premium quality, economically priced DTH Hammer Bits. All shanks, all sizes and all face configurations and bits options available. We deliver to anywhere in Australia!     DTH Hammer Bit Specifications Type Diameter (Inch) Diameter (mm) SD4 4-1/2” 115 SD4 4-3/4” 120 SD4 5” 127 SD5 5” 127 SD5 5-1/2” 140 SD5 5-3/4” 146 SD5 6” 152 SD6 6” 152 SD6 6-1/4” 158 SD6 6-1/2” 165 SD6 6-3/4” 170 SD6 7” 178 SD6 7-1/2” 191 SD6 8” 203 SD6 8-1/2” 216 SD8 8” 203 SD8 8-1/2” 216 SD8 9” 229 SD8 9-1/2” 241 SD8 9-7/8” 250 SD8 10” 254 SD8 12” 305 SD8 12-1/4” 311 DTH Hammer Bit Specifications Type Diameter (Inch) Diameter (mm) SD10 12” 305 SD10 12-1/4” 311 SD10 14” 356 SD10 14-1/2” 368 SD10 15” 381 SD12 12” 305 SD12 12-1/4” 311 SD12 14” 356 SD12 14-1/2” 368 SD12 15” 381 SD12 15-1/2” 394 SD12 16” 406 SD12 16-1/2” 419 SD12 17” 432 SD12 17-1/2” 445 SD12 18” 457 DTH Hammer Bit Specifications Type Diameter (Inch) Diameter (mm) DHD 3.5 3-1/2” 89 DHD 3.5 3-3/4” 95 DHD 3.5 4” 102 DHD 340 4-1/2” 115 DHD 340 4-3/4” 120 DHD 340 5” 127 DHD 350 5” 127 DHD 350 5-1/2” 140 DHD 350 5-3/4” 146 DHD 350 6” 152 DHD 360 6” 152 DHD 360 6-1/4” 158 DHD 360 6-1/2” 165 DHD 360 6-3/4” 170 DHD 360 7” 178 DHD 360 7-1/2” 191 DHD 360 7-7/8” 200 DHD 360 8” 203 DHD 360 8-1/2” 216 DHD 380 8” 203 DHD 380 8-1/2” 216 DHD 380 9” 228 DHD 380 9-7/8” 250 DHD 380 10” 254 DHD 380 12” 305 DHD 380 12-1/4” 311                                           DTH Hammer Bit Specifications Type Diameter (Inch) Diameter (mm) QL 40 4-1/2” 115 QL 40 4-3/4” 120 QL 40 5” 127 QL 50 5” 127 QL 50 5-1/2” 140 QL 50 5-3/4” 146 QL 50 6” 152 QL 60 6” 152 QL 60 6-1/4” 158 QL 60 6-1/2” 165 QL 60 6-3/4” 170 QL 60 7” 178 QL 60 7-1/2”