Eyewash streams provide zero vertical velocity stream engineering with even laminar flow for enhanced comfort, stability and effectiveness Axion MSR ABS plastic drench showerhead with flow control delivers dispersed flow for uniform drenching Pipe and fitting: 1-1/4-inches Schedule 40 hot-dipped galvanized steel. Supply and Waste: 1-1/4-inches IPS Certified by CSA to meet the ANSI Z358.1 Standard for Emergency Eyewash and Shower Equipment Axion MSR eye/face wash head (patent pending) uses an inverted directional laminar flow to sweep contaminants away from the vulnerable nasal cavity