Well I received them today - they're pretty cool looking. They are all grey and about 5 inches long in total. The centre is held together with a screw like connection and these are also on either end. However, my tubing is too thick to fit in these screw things so I'll probably just take them off and try to get the tubing over it or something. It seems pretty sturdy - I'll let you know how they perform when I get this lot up and running in a week or two, and I'll also take pictures of them then.
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Meethoss
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