WIDE COMPATIBILITY - Charging port adapter for R12 R22 to accept R134a quick disconnect. These low/high side retrofit adapters convert 1/4 inch SAE or 7/16 inch-20UNF R12 R22 charging ports to fit R134a quick disconnect hoses. Made of solid copper material, resistant to corrosion with good extensibility. EASY INSTALLATION - Low AC fitting conversion adapter saves time and effort during installation. Lightweight and convenient. DIMENSIONS - Low side: 1/4 inch SAE (7/16 inch-20) x 13 mm, blue. High side: 1/4 inch SAE (7/16 inch-20) x 16 mm, gold. COLOR - Blue and gold MATERIAL - Brass PACKAGE CONTENTS - 1 x Low-pressure quick coupler, 1 x High-pressure quick coupler, 1 x 13 mm blue cap, 1 x 16 mm red cap Note: Only the items listed are included. Other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.