Western Enterprises Regulator Bushing Adaptors Easily mounts on outlet bushing on a regulator having a B-Size outlet. This model has the same flow capacity as the torch - type (1200 SCFH at 50 PSIG) when installed on a regulator. Check valve is easily seen and is less subject to contamination, abuse and damage. . Pack of 1 WARNING: This product can expose you to Lead, a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov - Lead