MATERIAL: The industrial powder coating kit is made of silicone rubber. It is strong, corrosion-resistant, has good sealing properties and is not easy to crack. It can withstand high temperatures up to 200-300℃. Package Quantity: Rubber stoppers include 100 pieces in total and come in 8 different sizes ranging from 1/16 inch to 5/8 inch. Colors include red, black, red, yellow, and blue, suitable for holes of various sizes. Plastic box packaging: The taper hole plug is packed in a plastic box, divided into areas according to different sizes, making it more convenient to use and store. Wide range of uses: Solid rubber plugs are used for hole plugs, spraying, painting, and paint protection. They are widely used for blocking transmission, braking, vacuum pipes, and ports in chemical industry, machinery, construction, laboratories, etc. Color: As shown in the picture Material: Silicone Size: 17.60x9.91x2.59 cm Package Contents: 110* silicone rubber cone plugs (5 pcs red 20x25mm, 5 pcs blue 17x25mm, 5 pcs blue 14x25mm, 10 pcs blue 12x17.5mm, 10 pcs) Yellow 9.5x19mm, 15 black 6.5x19mm, 25 red 8.7x16mm, 35 red 4.7x16mm) only contains the above packaging content and does not include other products. NOTE: Light reflections and different monitors may cause the color of the item in the picture to differ slightly from the actual item. The measurement allowance is +/-1-3cm.