The AST# Oil Cooler Line Remover is used for disconnecting the transmissions oil cooler lines on Ford and Cadillac vehicles. The flares on the cooler lines near the fittings prevent access with the original style disconnect tools. The locking clip used in the fitting is different than the standard 'tabs' used on most other applications. The AST# will clear the flare and disconnect the new style clips with ease. This tool is applicable to 2003 and 2004 V8 Ford Explorer, 2004 Ford F150, and 2003 and 2004 Cadillac CTS.. Used for R and R of Oil Cooler Lines. Applicable to Ford and Cadillac. Purple-Anodized Aluminum Construction. Quick line removal. Made in the U.S.A.