Introducing the Carmex Swiss Line Insert for Threading (UN), Left Hand — GT19L72UNBLU. Designed for Swiss-type automatic lathes and high‑volume production, this LH threading insert enables reliable left‑hand UN thread turning and versatile turning capability in demanding shops. It supports quick on‑machine indexing, helping you cut setup time and maintain repeatable thread geometry across lots.

• On‑machine indexing: Inserts are engineered to be indexed directly on the Swiss machine, enabling fast tool changes and repeatable thread geometry without removing the tool from the setup.
• Grounded cutting edges: Precision-ground edges deliver consistent cutting performance, producing cleaner threads and reducing rework over long production runs.
• Coated holders for abrasion resistance: Durable coatings on the holder resist wear in demanding threading tasks, extending tool life and maintaining stable performance.

This insert supports efficient, high‑quality threading in UN left‑hand applications while aligning with fast changeovers and dependable results across a range of turning and profiling tasks. With Carmex’s Swiss Line tooling, you get predictable performance, reduced downtime, and a clear path to improved throughput in Swiss‑type machining environments.