Description
★ ☀❤Premium Material: The 4 pieces CO2 DIY reactor bottle cap is made of high quality plastic material with a silicone ring to ensure no air leak, non-loose, non-slip wire when working. And it is safe to use and will not create harmful material for fish and plant. ★ ☀❤Application: Suitable for all kinds of DIY reactor, safe, durable and air tightness. Can be directly screwed to the carbonated beverage bottle to use. Note: it is only for carbonated beverage bottles, because ordinary mineral water
