Photo 1 of #13 Lab Tapered Stopper Plug for 2-7/16" to 2-1/2" 61-64 mm Test Tube Hole (Pack of 3) for Paint Masking Surface Protection Dust Isolated Liguid Sealed Black Rubber

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Photo 1 of #13 Lab Tapered Stopper Plug for 2-7/16" to 2-1/2" 61-64 mm Test Tube Hole (Pack of 3) for Paint Masking Surface Protection Dust Isolated Liguid Sealed Black RubberPhoto 2 of #13 Lab Tapered Stopper Plug for 2-7/16" to 2-1/2" 61-64 mm Test Tube Hole (Pack of 3) for Paint Masking Surface Protection Dust Isolated Liguid Sealed Black Rubber