This listing is for a high-value lot of 3 Pieces of brand-new, ultra-hard Sandvik Coromant CoroCut 1-2 Grooving Inserts.

The full part number is N123K1-0635-0002-GE-CB20. ​

These are extremely specialized CBN (Cubic Boron Nitride) inserts (Grade CB20), which are necessary for high-speed precision finishing of Hardened Steel (typically HRC 55 and above) and Hard Cast Iron. The insert width is 0.250 in 6.35 mm

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