GCE Single Stage 1 Gauge Regulator - Side Entry Argon Reg
Was previously known as a ButBro branded regulator, GCE have now dropped the ButRo brand name so these regulators now come branded as GCE. The regs themselves are identical.
High quality GCE (or ESAB) branded regulator that are designed to last and when you consider the length of time that your regulator will be used for the cost between this reg and other cheap alternatives the difference really is fractional and the added safety benefit is potentially life saving. A quick google on regulator burn out will help to show the differences between the good and the bad.
With a side entry these regs are built for the side exit cylinders like Air Products and the Hobbyweld cyclinders that Noz-Alls provide.