55Pcs Silicone Hole Plug: Package includes 55pcs black silicone hole plugs, enough quantity for your daily use and replacement 11 Sizes Flexible Stopper: Silicone tube plugs are available in 11 sizes, the smallest size is 0.35 x 0.2 x 0.28 inch(9 x 5 x 7mm), the largest size is 0.75 x 0.6 x 0.3 inch(19 x 15 x 7.5mm) Fit for Hole: The hole plugs designed with various sizes, fit from 3.5mm(0.14 inch) to 11mm(0.43 inch) hole. You can choose them according to your needs Waterproof Material: Bottle seal plug made of silicone, good sealing of waterproof and dustproof Wide Application: Can be used as waterproof plugs, sealing plugs, test tube plugs, rubber bulkheads, caps, cylinder plug heads, threaded rubber plugs