GTC Aquarium Live Plants CO2 Diffuser Air Generator System Bottle Cap ( Pack of 10 )
100% Brand new and high quality
Bottle caps for DIY Co2 system
Quantity: 10pcs
High quality plastic for issusing great resisbility of rub
O-ring is attached inside the cap to avoid leaking of CO2
Fits 4mm inner diameter hose and common pet plastic bottles
Easy and simple to set up