R12 # 8 O-Ring Backseat Valve With # 8 Male Insert O-Ring Thread R12 # 10 O-Ring Backseat Valve With # 10 Male Insert O-Ring Thread R12 #8 Inline Charge Fitting with #8 Male & Female O-Ring R12 #10 Inline Charge Fitting with #10 Male & Female O-Ring # 6 Inline Fitting with 3/8" - 24 Thread Female Port # 8 Inline Fitting with 3/8" - 24 Thread Female Port - Steel # 10 Inline Fitting with 3/8" - 24 Thread Female Port R12 # 8 O-Ring Compressor Fitting With # 8 Male Insert O-Ring Thread R12 # 10 O-Ring Compressor Fitting With # 10 Male Insert O-Ring Thread # 8 O-Ring Service Valve With # 8 Male O-Ring With Four 3/8" x 24" Female Ports Multi Port Service Valve Kit # 10 O-Ring Service Valve With # 10 Male O-Ring With Four 3/8" x 24" Female Ports Multi-Port Service Valve Kit