you are looking at a pair of
Car AC Port Quick Connector Adapters, (14+16) mm X 14 mm F Model: QCPh
Manifold hoses can not direct attach to the vehicle AC system port(R134a, 14 mm and 16 mm ports). This set is needed between the car AC service port and the Manifold set before doing any diagnosis/charging/recovery.
This pair of adapters works with R134a car AC manifold ONLY. If you have a manifold for R22 or R12 systems, you will need quick connectors model QCPL or QCP
FEATURES:
- Set of 2, color coded quick connectors, 14 (low side) and 16 mm (high side)
- Blue, Low side quick connector/adaptor, 14 mm with valve
- Red, High side quick connector/adaptor, 16mm with valve.
- Connect 14 mm manifold(Car AC R134a) ONLY
- All metal construction, durable service tool.
- Quick action 6-ball operated, safe design to protects against injury and refrigerant loss.

Compare with another 2 other models and see the difference:
QCPL:

QCP: work with All manifold: