The 510 Pin is spring loaded if that is what you mean. The connection itself is in a fixed position. This mod is a considered a "side-by-side" (I think that is the term) similar to the VTR. I think there is a extension tube that you can get to use a dripper with it, but it doesn't come in the box.Does your 510 adjust on the knight to accommodate your tank? Or is it just a gimmick?
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