S.U.R.&R's compression block-off kits effectively eliminate failed rear A/C components and avoid the high costs involved in repairing these systems. The best part is you will still be able to use your front A/C system to stay cool. Product Features:American Quality - Proudly Made In AmericaOn the car repairs made simpleMake connections easily by hand; no specialty tools required.Compression unions and adapters specifically designed for A/C line repair applications pressures rated up to 600 psiComes with SAE sizes including 3/8, 1/2, 5/8 and 3/4Drastically cuts labor timePressure rated up to 600 psi
