Wide Application: Can be used as waterproof plugs, sealing plugs, test tube plugs, rubber bulkheads, caps, cylinder plug heads, threaded rubber plugs
Size: Silicone bottle seal plug about 1.04x0.55"(26.5x14mm), 1.18x0.55"(30x14mm), 1x0.5"(25.5x13mm), 0.98x0.53"(25x13.5mm), 0.78x0.5"(20x13mm)
20PCS 5 Sizes: Contains 20PCS white silicone stopper of different sizes, inner diameter is 21/64 inch 15/32 inch 25/64 inch 9/32 inch 1/4 inch, a large number to meet your daily needs
Hole Plug:Plug design can better fit the smooth surface, easy to use and not easy to fall off
Waterproof Material: The bottle seal plug is made of silicone, providing effective waterproofing and dust protection.