Binzel Liners are suitable for all Binzel Torches. The liners will also fit all Binzel copy torches.
Plain steel liners are for torches with a seperate gas line; ie water cooled MB501.
Use soft wire plastic liners for Aluminium & Stainless steel.
Composite liners are for enhanced feeding & conductivity when using soft wire's.
Please ask if you are unsure which liner is best suited to your application.