The Carmex Swiss Line Insert - Back Turning - Left Hand (GB20LA30BLU) is a purpose-built, indexable tool insert designed for Swiss-type lathes and automatic turning centers. It enables high-volume, cost-efficient machining for external grooving, back/front turning, profiling, thread turning, parting, and general turning applications. Built to streamline production, this insert supports reliable performance in demanding turning operations.

• Grounded cutting edges: Delivers stable, predictable cutting performance with consistent chip formation and longer tool life across a range of materials.
• Indexes directly on the machine: Allows quick edge or radius changes without removing the holder, trimming setup time and reducing downtime.
• Coated holders for abrasion resistance: Enhances wear resistance in tough environments, helping maintain accuracy and extend tool life in demanding jobs.

Designed for engineers, buyers, and technicians who need dependable, repeatable results on Swiss-type equipment, this insert supports efficient workflows and high-throughput turning. By combining ground cutting edges, in-machine indexing, and durable coatings, it helps you achieve tight tolerances, smooth finishes, and lower total tooling costs over the life of a production run.