FMSI > Air Conditioning System > A/C Tube Repair > A/C Line Splices, Reducers & Block Offs > Item # 76501 FMSIFMSI Air Conditioning SystemAir Conditioning System A/C Tube RepairA/C Tube Repair A/C Line Splices, Reducers & Block OffsA/C Line Splices, Reducers & Block Offs Item # 76501 Item # 76501, A/C Block Off Cap 76501A/C Block Off Cap Request Information Email This Page Download PDF Download PDF Printable Page /Asset/REAR BLOCK OFF.jpg /Asset/REAR BLOCK OFF.jpg Close Window LINE SPLICE™ works on metal or aluminum lines for any Air Conditioning, Transmission Power Steering or Heater Line Repair. Specifications Size N/A 1/2"