They are useless. The hole is approximately 9mm or 3/8 inch. The material is very hard and doesn't stick well to the silicone tip of the bottle, it just falls off.
Gorilla Crystal Clear Repair Tape, 1.88β X 9 Yd, Clear, (Pack Of 1)
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Industrial-Strength Double-Sided Woodworking Tape, 4"X30 Yards Yellow CNC Machine Tape For Woodworkers And Crafters - Removable Woodturner'S Tape From XFasten
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