This series products are made of high quality brass material, with excellent crafts. It has advantages on convenient connecting, less leakage and so on. It is widely used for refrigeration systems 1. High quality brass material HPB59-1or C3771BD 2. Complete sizes: from 1/4" to 7/8" for optional. 3. Polishing surface treatment. 4. Applications: used for air conditioning system 5. ISO9001, ISO14001, CJ/T111standards approved 6. Fast delivery ,Good standard export packing . 7. Warm service, competitive prices. 8. 16 years' experience in manufacturing . http://www.chinasanpu.com