CO2 bottle adapter, TR21-4 female thread to TR21-3 male thread, brass, for soda bottles. Good seal, high hardness

Thread Adapter for CO2 Bottles (TR21-4 to TR21-3): This brass adapter converts a TR21-4 female thread to a TR21-3 male thread. Ideal for using existing TR21-4 bottles with systems requiring a TR21-3 thread. High Pressure for Safe Use: This soda bottle adapter is designed for a working pressure of up to 3,000 psi (approximately 207 bar). This pressure is significantly higher than the typical working pressure of household appliances (approximately 100-120 psi). Robust Brass Construction for Increased Durability: Made of high-quality brass, this CO2 adapter offers excellent corrosion and wear resistance. Suitable for extended use. Compact Size for Easy Handling: Measuring approximately 2.5 x 1.5 x 3.5 cm, this thread adapter is compact and lightweight. Ideal for use at home or during outdoor activities.
Easy assembly with hand tools: the adapter is first screwed onto the thread by hand, then moderately tightened with a wrench – no special tools are required.