Lisle 31310 Double Flaring Tool Set 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" Packaged in a durable, oil and grease resistant tray for storage Full instructions are included Skin-packed with tray