Aquarium Siphon Head
Description
Hose adaptor 15mm (internal) to 18mm Standard thread (Soda/Coke etc) plastic bottle. I use this for water changes in my Aquarium, works really really well. I changed the thickness to accommodate for a tighter fit on the hose, the above picture is narrower hence the tape, the STL does not have this problem and is a much tighter fit
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