Features: Experience seamless air conditioning maintenance with the adjustable air conditioning quick couplers, featuring a high and low pressure design that ensures compatibility with R134A refrigerants systems. Constructed from brass materials, these quick couplers offer corrosion resistance and a color coded interface, redness for high pressure and blue for low pressure—for easy identification and error free use. Suitable for automotive technicians and air conditioning engineers, the quick couplers are essential tool for professional requiring and efficient connections in air conditioning systems. Whether it's for automotive repair shops or home air conditioning maintenance, these adjustable quick couplers provide a secure connection, making them perfect for a variety of air conditioning service applications. Enhances your toolkit's capabilities with these precisions air conditioning adapters, ensuring a leak free seal and accurate pressure adjustments for air conditioning performances and diagnostics. Specifications: Texture: Brass Size: As Pictures Show Package Includes: 1 Set Quick Coupler note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.