About the product:The experimental instrument plug can be used to block the glass mouth, pipe mouth, fish tank mouth, and so on.Good choice for you:Made of Silicone, not easy to deform, has moderate hardness, high elasticity, good insulation and sealing performance, high-temperature resistance, acid and alkali resistance, and is insoluble and non-swelling in acidic liquids.Specification:Fit for the hole: 11-15mm / 0.43" - 0.59"Bottom Diameter(small-end): 11mm / 0.43"Top Diameter(big-end): 15mm / 0.59"Body Height: 20mm / 0.79"In the package of: 15 Pack x StopperEasy to install:Easy to install and widely available, just plug it into the mouth of the object you need to seal.Tips:Please ensure the correct size you need before purchasing.
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