Rubber Tapered Plug 22mm to 28mm with 8mm Hole Tubes Stopper White 10 Pieces 0.4"IDx0.47"ODx6" the package are not included

the package are not included the glue

Descriptions: Electroplated diamond has high hardness and good wear resistance

wear resistance and high strength

coated with a silicone resin and silicone rubber

Material: Polyester Nylon Plastic

Rubber Tapered Plug 22mm to 28mm with 8mm Hole Tubes Stopper White 10 Pieces 0.4"IDx0.47"ODx6" the package are not includedWhat is this? The Rubber Tapered Plug is great for laboratory utensils such as flasks, test tubes, or other laboratory applications, also can as a sewer plug, water pipe plug, or drain plug. What will I get? The tapered plug is in size of: Bottom Diameter: 22mm 0. 87 inch; Top Diameter: 28mm 1. 1 inch; Height: 30mm 1. 18 inch; Fit Hole Size: 23 27mm; In the package of: 10 x Rubber Tapered Plug Are there any advantages of the product? Made of Rubber,