Agile-shop R134a Quick Coupler Adapters 90 Deg High LOW A/c Air Conditioning Manifold Freon H/L Freon quick couplers adapters Side fitting for A/C manifold gauge set (R-134A) type High side red manual coupler: 14mm-Fx 16mm Low side blue manual coupler: 14mm-Fx 13mm Blue & Red Switch Material: Aluminum