1. available in all standard drilling sizes (A,B,N,P,H). 2. various waterways design. 3. long bit life and good performance. To select the right bit for the job, assess the speed and power of your drill for the size and depths of the holes to be drilled and assess ground conditions such as rock type/formation and down-hole conditions. Size: TDS bits are available in all standard drilling sizes . Also, non-standard sized bits can be produced according to requirements from clients. Crown Height: TDS offers crown impreg depths of 9mm, 12mm, and 16mm .The taller crown heights provide improved bit stability and reduced vibrations, enhancing bit life and performance. Waterways: Various waterways are available for diamond impregnated bits. Differing waterways allow for better flushing in various ground conditions and drilling systems. Matrix: TDS impregnated bits matrices can be selected by our engineer according to ground conditions at client's work site. Threads: standard Q threads as well as thread types required by clients are available. 
| Bit Matrix | K1 | K3 | K5 | K7 | K9 | K11 |
| Matrix Hardness | HRC54 | HRC42 | HRC30 | HRC18 | HRC6 | HRC0 |
| Rock Hardness | Select K1 in case of low working lifte of K3 | Soft Rock Medium Hard Rock Hard Rock | Select K11 without footage of K9 | |||
| Grain Size of Rock | Large Grain Medium Grain Fine Grain | |||||
| Breakage of Rock | Serious Breakage Normal Breakage Complete | |||||
| Drill Rig Power | High Power Medium Power Low Power | |||||
| Seq. | Sizes | Item | OD(mm) | Code |
| 1 | AWL | Reaming Shell | 48 | P |
| 2 | BWL BWL2 | Reaming Shell | 59.9 | P, D |
| 3 | NWL | Reaming Shell | 75.7 | P, D |
| 4 | HWL | Reaming Shell | 96.1 | P, D |
| 5 | PWL | Reaming Shell | 122.6 | P, D |
| 6 | SWL | Reaming Shell | 148.1 | P, D |
