... . Material: Brass 2. Type: Valve Core, Cartridge 3. 10 years OEM experience 4. ISO9001:2000 Specifications:1. ... requests.3. Size: 3/16", 1/4", 5/16", 3/8", 3/4", 1/2”, 2”, etc, can be customized.4 ... feel free to contact us for more information. Brass Valve Cartridge