Yellow Jacket 60210 Heavy-Duty 45 Flaring Tool.

60210 heavy duty is designed for tight spaces
Heavy duty flaring tool for 3/16″, 1/4″, 5/16″, 3/8″, 7/16″, 1/2″, 5/8″ O.D.
Hardened steel flaring bar to resist tube slippage
Forged steel yoke that slips over bar and locks with a turn
Precision threaded feed screw and long handle