Amazon.com: SDTC Tech G1/4" Pass-Through Connector Fitting Piercing Type Bulkhead Top Coolant Injection Joint for PC Water Cooling System : Electronics
17069 Alphacool HF bulkhead connector G1/4 - deep black
Bulkhead fitting G1 / 4 female to 10mm pants barb - silver nickel [65051] from WatercoolingUK
4 Pack Pvc Bulkhead Fitting - Double Threaded Bulkhead Water Tank Connector, With Silicone Gasket, Apply To Aquariums, (g1/2 Female 1.5" Male, Gray) | Fruugo IE