0-400PSI Performance Argon Regulator, 1/4" FNPT outlet Lightweight, Billet Machined Aluminum with BLUE ANODIZED finish CGA580 Brass Cylinder Connection Dual Chrome Gauges - Easy read 45CFM (Cubic Feet Per Minute) Preece Precision lightweight, high performance Argon Regulator (Inert Gases such a HELIUM and Nitrogen) delivers performance for a variety of applications where accurate 0-400PSI Argon is required. The outlet is 1/4" FNPT allowing for easy adapting to most applications. Body is machined from aluminum and anodized with BLUE finish. Gauges are easy to ready in robust chrome plated cases. CGA580 tank connection for Argon (Inert Gases), 45CFM HIGH FLOW DESIGN