2pcs RNGN120400A CBN Insert | 1/2″ 12.7mm Round Hardened Steel，Cast Iron Turning
These premium round-shaped inserts are specifically designed for precision turning of hardened materials. 2 × RNGN120400A CBN Inserts. Material: Solid CBN tip. Hardened steel components (60-65 HRC). Excellent for hard turning applications (45+ HRC).