Mastercool 71200 "Hydra-Flare" Push-Connect Tube Flaring Tool System. Fabricates push-connect flares found on transmission cooler, fuel and some brake lines. Patented "Hydra-flare" hand operated hydraulic ram generates the power necessary to produce proper fitting ends. Includes custom carrying case. Push-Connect Flaring Tool Set includes: Hydra-flare assembly, 5/16" adapter, 5/16" die set, 3/8" adapter, 3/8" die set.