This threaded pipe joint is designed for open-hole sealing connection for inlet and outlet pipes of water tanks, buckets, etc.Specification:Color: GreyShape: StraightMaterial: PVC (Polyvinyl Chloride), Silicone RubberFit Drilling Hole Size: 50mm ID, DN40Outer Diameter: 58mm / 2.28 inchInner Diameter: 50mm / 1-1/2 inchOverall Dimension: 88x69mm / 3.46x2.72 inch (L*Max. D)Package Content: 2 x Pipe Joint with GasketsAdvantage:High strength, weather resistance, lightweight, moisture resistance, wear resistance, chemical corrosion resistance, clear thread, easy to use.Instruction:Drill a hole in the glass that is consistent with the outer diameter of the pipe fitting, place one silicone gasket inside and outside the glass, then tighten it by hand.Notice: Please confirm the correct size before ordering. If used together with adhesive glue (not included here), the effect will be better and longer-lasting after 24 hours.