GOLD DEER 2Pcs 1/4" NPT Female Brass Bulkhead Coupling, Straight Tank Fitting with Gasket & Lock Ring, 1.5" Length, for Air, Water, Hydraulic Lines,Fits 3/4" Mounting Hole

["2-Piece Brass Bulkhead Coupling Set: Each fitting features 1/4\" NPT female threads on both ends, 1.5\" overall length, and a 0.98\" hex outer diameter—designed for clean, secure through-panel or tank wall installations.","Integrated Sealing Components: Comes with a built-in gasket and serrated metal lock ring to help create a leak-resistant connection when installed in a 3/4\" diameter hole. For best results in pressurized systems, use with PTFE thread seal tape.","Suitable for Medium-Pressure Fluid Systems: Rated for use in applications up to 1200 psi, including compressed air lines, water transfer, hydraulic circuits, refrigerant lines, and garden irrigation setups.","Wide Operating Temperature Range: Functions reliably in environments from -53°C to 121°C (-65°F to 250°F), making it suitable for both indoor and outdoor installations.","Common Applications Across DIY & Industrial Projects: Ideal for rain barrels, storage tanks, air compressor manifolds, instrumentation panels, and custom fluid routing where a neat, permanent through-wall connection is needed."]