Review on 💡 14-Piece Quick Connect Brass Air Coupler and Plug Kit for 1/4-Inch NPT Fittings by Amazon Basics by Telly Roden

These fittings do not give you a performance boost compared to regular IM fittings. Buy Milton V style; You have a 30% larger hole. The Milton clutch is also much better in every way. Cons: Fittings - 30% smaller center hole Coupling - this thing is riddled with internal limitations but the worst part is that the back where you keep screwing the hose on is almost 100% sealed. . Inside there are almost twice as many O-rings and plastic to leak compared to the all-metal Milton. Hole Milton: 7.63 mm = area 45.72 square mm. Base hole: 6.59mm = area 34.10 square mm.