These are the highest SCFM rated couplers

7/16″ Drive Twist Socket Laser Printing(1 Piece)

High-Pressure Replacement Hose 1/4 In X 12 Ft

1/4" MNPT with a 1/4" barb swivel are made with steel construction and have a black oxide finish

Available in 2″ and 3″ FPT1 size

MT-RSR Steel Clip-On Wheel Weights - FN Profile - 5 g WW-FE-FN-05G Tankless Tank Package These are the highest SCFM*PHOTOS MAY NOT BE REPRESENTATIVE OF ACTUAL PRODUCT* Steel Clip On Wheel Weights FN Profile 5 g Box of 25 Steel FN Weights Zinc FN Weights 5 g 10 g 10 g 15 g 15 g 20 g 20 g 25 g 25 g 30 g 30 g 35 g 35 g 40 g 40 g 45 g 45 g 50 g 50 g 55 g 55 g 60 g 60 g Interchangeable Part Numbers: FN005S, PLOFNFE05