Product Description:Name: Hole PlugsMaterial:Silicone RubberColor: black, white,grey,transparentSize description: A=8mmB=12mmC=4mmD=2mmE=5.5mmIf you need other sizes, please contact us.Temperature resistance: -40℃ to +250℃Features:Silicone rubber is a gentle and elastic materials with nice sealing type, hot temperature resistance, anti-aging, acid and alkali corrosion resistance.The data is for reference only, please refer to the particular product!Package Include:According for your Choose!