Will i did find out that my 3M CO2 Regulator has 1/8 connection so I'm look at a B-2MA2-1/8-Angle Pattern, It's not listed on the Swagelok web site, But if you want to see what it looks like look at SS-2MA2-1/8-Angle Pattern, It's the same except the SS=Stainless Steal and the B=Brass