The LC-O20 set organises the nozzle sizes and ceramic holders a cutting shift really consumes, in a compartmented case with the sizes marked by position rather than by squinting at stampings. Single and double nozzles cover the common gas and material pairings.
Nozzles are machined and inspected to concentricity limits that protect cut edge consistency — an eccentric nozzle shows up as a directional edge difference long before it shows up as a failure. Refill packs restock by position number.
