Pipe Fitting and Air Hose Fitings, Hex Nipple Coupling 1/4-Inch NPT x 1/4-Inch NPT Male Pipe- 4 Piece

T TANYA HARDWARE Brass Hex Nipple 1/4 Inch NPT x 1/4 Inch NPT Male Pipe Adapter (4 Piece)

Sanpaint 2 Pack 1/4" x 1/4" NPT Coupler, Brass Female Pipe Fitting (I.D x I.D: 1/2'' x 1/2'')

SENCTRL 0-100 Psi Glycerin Liquid Filled Low Pressure Gauge, 2.5" Dial Size, 1/4" NPT Lower Mount, Stainless Steel Case, for Water Pump, Pneumatic Air, Well, RV Hose, Tank, Gas Pressure Test