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First-choice central insert grade for ISO P, K, S and H materials with PVD-coating produced with Zertivo® coating process technology. Provides excellent wear resistance and toughness.Features and benefits
CoroDrill® DS20 is an indexable drilling concept with innovative drill body and insert designs offering reliability, predictability and outstanding penetration rates for your 4–7×DC operations.
| CoroDrill® 870 | CoroDrill® DS20 | CoroDrill® 880 | CoroDrill® 881 | |||
| Steel | P | GC4334 | GC4334 | GC4334 | GC4044 | Peripheral grade |
| GC1344 | GC1044 | GC1044 | Central grade | |||
| Stainless steel | M | GC2334 | GC2044 | GC2044 | GC2044 | Peripheral grade |
| GC1144 | GC1144 | GC1144 | Central grade | |||
| Cast iron | K | GC3334 | GC4334 | GC4334 | GC4044 | Peripheral grade |
| GC1344 | GC1044 | GC1044 | Central grade | |||
| Non-ferrous metals | N | GC4334 | H13A | GCN124 | GC4044 | Peripheral grade |
| H13A | GCN134 | GC1044 | Central grade | |||
| HRSA and titanium | S | GC2334/GC4334 | GC4344 | GC4344 | GC2044 | Peripheral grade |
| GC1344 | GC1044 | GC1144 | Central grade | |||
| Hardened steel | H | GC4344 | GC4344 | GC4044 | Peripheral grade | |
| GC1344 | GC1044 | GC1044 | Central grade |

First-choice PVD-coated central grade for ISO P, K, S and H materials. Provides excellent wear resistance and toughness.

The PVD-coated central grade is your first choice for ISO P, K, S and H materials and provides excellent wear resistance and toughness.

First-choice PVD-coated central grade, suitable for all types of stainless steels and titanium materials.

First-choice CVD diamond coated central grade, suitable for non-ferrous metal applications. Great wear resistance and excellent function against build-up edge.

For excellent wear resistance in all types of stainless steels and titanium use this PVD-oxide coated peripheral grade.

First-choice peripheral grade choice in non-ferrous metal applications. Excellent wear resistance and great function against build-up edge.

First-choice peripheral grade in steel and cast iron applications with good to average conditions. Inveio® technology provides a high level of wear resistance.

Tough, high Cr content and fine-grained substrate with thick PVD coating (AlTiN) produced with Zertivo® technology. High reliability with improved edge security provides resistance against built-up edge and chipping.

Tough, high Cr content and fine-grained substrate with thin multi-layer PVD coating (AlTiCrN) produced with Zertivo® technology. For high reliability and improved resistance against chipping and flaking on secondary edge.

Hard and fine-grained substrate with multi-layer PVD coating (AlTiCrN) produced with Zertivo® technology for improved wear resistance.