# P20 — Carbide insert grade cross-reference by ISO application group and manufacturer For P20, manufacturer is Acera Tool; grade designation(s) is AC1125 AC1225, recorded from its source on 2026-08-11. - **ISO application code:** P20 _(verified: appears in the quote below)_ - **Manufacturer:** Acera Tool _(our reading, not quoted from the source)_ - **Grade designation(s):** AC1125 AC1225 _(verified: appears in the quote below)_ ## What the source says > P20 | AC1125 AC1225 | ## Source - https://www.aceratool.com/carbide-insert-grades-chart/ Last verified: 2026-08-11. Review by: 2028-08-10. Part of [Carbide insert grade cross-reference by ISO application group and manufacturer](https://referencesource.org/industrial-consumable-tooling-cross-reference/).