The Carmex Polygon Swiss Line Insert for Grooving & Turning, Left Hand (G25LW12T30BLU), is built for Swiss-type lathes and automatic turning centers. It enables high‑volume external grooving, back/front turning, profiling, thread turning, parting, and general turning with precise, repeatable results.

Designed for left‑hand operations, this insert works with coated holders to maximize tool life and uptime in demanding production environments, helping you achieve consistent performance on challenging parts.

• Grounded cutting edges: Precisely finished edges deliver clean, accurate cuts, reduce chatter, and improve surface finish for every pass.
• On‑machine indexing: Inserts can be indexed directly on the Swiss machine, minimizing setup time and preserving tool alignment for fast, reliable changes.
• Abrasion‑resistant coated holders: Coated holders resist wear and heat, extending tool life and enabling longer, more consistent runs between changes.

In everyday Swiss‑type machining, this insert supports reliable, repeatable results across grooving, turning, profiling, and threading tasks. On‑machine indexing cuts downtime, while grounded edges and durable, coated holders deliver dependable performance in demanding materials and high‑volume applications, helping you achieve tighter tolerances and smoother finishes with fewer interruptions.