Hole-openers manufactured by Universal Drilling Technique LLC
| Type | Diameter, mm | Designed for drilling formations | Design features | Connecting thread according to State Standard 21210-75 | Maximum drilling thrust, kH. | Maximum weight, kg | Maximum length, mm |
|---|---|---|---|---|---|---|---|
| 5РШ 393,7 МС | 393,7 | soft formations with medium streaks | hole-opener+ 2 spare crowns | МЗ-171 х НЗ-147 | 250 | 220+103+103 | 830 |
| 5РШ 393,7 СЗ | 393,7 | medium hard abrasive | hole-opener+ 2 spare crowns | МЗ-171 х НЗ-147 | 250 | 220+103+103 | 830 |
| 5РШ 393,7 Т | 393,7 | hard low-abrasive | hole-opener+ 2 spare crowns | МЗ-171 х НЗ-147 | 250 | 220+103+103 | 830 |