Roller legs
- Roller bits welded type for KR core barrels
- Roller bits with holders for KR core barrels
- Roller bit arm short for Backreamer and Hohlopener
- Roller bit arm long for Backreame and Holhlopener
| Bit size | Bit type | |
|---|---|---|
| 6 " | 152.4 mm | 417 / 437 / 517 / 537 / 617 / 637 / 737 / 837 |
| 8 1/2 " | 215.9 mm | 417 / 437 / 517 / 537 / 617 / 637 / 737 / 837 |
| 9 1/2 " | 228.6 mm | 417 / 437 / 517 / 537 / 617 / 637 / 737 / 837 |
| 9 7/8 " | 250.8 mm | 417 / 437 / 517 / 537 / 617 / 637 / 737 / 837 |
| 12 1/4 " | 311.2 mm | 417 / 437 / 517 / 537 / 617 / 637 / 737 / 837 |
Roller bits welded type for KR core barrels
Roller bits with holders for KR core barrels
Roller bit arm short for Backreamer and Hohlopener
Roller bit arm long for Backreame and Holhlopener
