Makes Both Single and Double SAE Flares. This tool set includes everything to flare thin wall steel aluminum or .040 wall soft copper tubing. The set includes 5 thread dies and adapters for forming double flares on the following tubing sizes: 3/16 1/4" 5/16" 3/8" and 1/2". However this set is not for use on stainless steel tubing. The set is packaged in a durable oil and grease resistant tray for storage. Full instructions are included."