MECCANIXITY Silicone Rubber Hole Plug Soft Flexible Stopper for 10-11mm Hole White 6 Pieces

What is this? Silicone Rubber Hole Plug is used to seal bottle flasks in the laboratory or seal holes tubes in the kitchen, home, etc, soft and flexible, easy to fit most holes. What will I get? The Silicone Rubber Hole Plug is in size of: Bottom Diameter: 11mm / 0.43"; Top Diameter: 15mm / 0.59"; Height: 12mm / 0.47"; Hole Diameter: 7mm / 0.28"; In the package of: 6 x Silicone Rubber Hole Plug Are there any advantages of the product? Made of silicone rubber, good resistance to chemicals, can withstand high temperatures up to 600 degrees Fahrenheit (315 Celsius) in a short time. T shape hole plug, good sealing performance, flexible and durable, not easy to crack, shrink, harden or break. How to use it? Cap designed for easy installation and removal, no tools required. What should I notice? Please check the size carefully before ordering!