High-Quality Material: Industrial powder coating kit is made of silicone rubber. It is sturdy, has corrosion resistance, and good sealing is not easy to crack and has a high-temperature resistance of up to 200-300. Package Quantity: Rubber stoppers total includes 110 PCS in 8 different sizes, sizes from 1/16Inch to 5/8Inch. Color in red, black, red, yellow, and blue, suitable for many sizes of holes use. Plastic Box Packaging: tapered hole plug packed with a plastic box, divided into areas according to different sizes, more convenient use, and storage. Wide Application: Solid rubber stoppers are used for hole plugs, spraying, coating, and paint protection, and widely for blocking transmission, brake, vacuum pipelines, and ports in chemicals, machinery, construction, or laboratories. Colour:As Shown Material:Silica gel Size:17.60x9.91x2.59 cm Package Contents: 110 * Silicone Rubber Tapered Plug(5 red 20x25mm,5 blue 17x25mm,5 blue 14x25mm,10 blue 12x17.5mm,10 yellow 9.5x19mm,15 black 6.5x19mm,25 red 8.7x16mm,35 red 4.7x16mm) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.