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151A 1 Series Inserts To Suit T-A Replaceable Insert Drilling SystemSuitable for good to rigid machining applications and drilling high alloy and exotic materials. Material hardness up to 350 BHN 121kgFeatures Diameter Range 17.53 to 24.38mm Grade: HSS Super Cobalt TiAlN Coated for wear resistance over high surface speeds,excellent oxidation resistance Maximum working temperature 800CNOTE - 1.5 series inserts fit into both 1 and 1.5 series holders. However, 1 series inserts ONLY fit into 1 series holder
| Material | Cobalt High Speed Steel |
| Series | 1 Series |
| Geometry | Standard |
| ISO Designation | 151A-20.5 |
| Diameter | 20.5mm |
| MFR Part No. | 151A-20.5 |
| Finish/Coating | TiAlN |
| Drilling System | T-A\u00ae |
| Point Angle | 132\u00b0 |
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