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 ShownMaterial:Silica gelSize:17.60x9.91x2.59 cmPackage 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.