One Hole Rubber Stopper Take A 2 Holed Rubber Stopper And Fit A Small Glass Tubes Into Each Hole 2 Cut A Piece Of The Plastic Tube As Long As The Flask Connect One End Of This

July 10, 2019
one hole rubber stopper take a 2 holed rubber stopper and fit a small glass tubes into each hole 2 cut a piece of the plastic tube as long as the flask connect one end of this

one hole rubber stopper take a 2 holed rubber stopper and fit a small glass tubes into each hole 2 cut a piece of the plastic tube as long as the flask connect one end of this.

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