Feature 1Multiple Purpose: The quick couplers adapters are suitable for R1234yf refrigerants, AC manifold gauge, diagnostic check, recovery and evacuation work. 2Easy Installation: The metal construction of the quick couplers adapter is for quick and easy to install, red for high pressure, blue for low pressure, durable and removable. 3Protective Function: The extended disconnect protection sleeve of the connector adapter protect from injury and refrigerant loss, defending against leakage, having hard construction. 4Durable Material: The manual couplers is made of durable and reliable material, high strength and wear resistant, having a long service time. 5Ideal Replacement: The quick manual coupler is a perfect replacement to directly replace the old and broken accessory, ensuring the normal operation.Item Type:R1234yfQuickCouplersSize:High Side R1234yf Coupler (Red): M12mm Female x 17 mmLow Side R1234yf Coupler (Blue): M12mm Female x 14 mmAdapters: M12mm Male x 1/4 SAE Male .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List2 x R1234yfQuickCouplers2 x Protector