PREMIUM MATERIAL: The silicone vacuum hose, made of high temp reinforced silicone, is a solid silicone tubing, which has no irritating odor and has high heat resistance with no collapse. The silicone tube is anti twisting and difficulty deformed. | HIGH PERFORMANCE: The vacuum line has a wall thickness of 0.12inch, whose working pressure is 43PSI, and burst pressure is 100PSI at high temperature, 130PSI at room temperature and which can work greatly at a temperature of -40℉ to 392℉. The FDA food grade silicone hose, which is safe, is vulcanized with platinum. | APPLICATION: The silicone hose is mainly used for air and water transmission in engines, but not for fuel, oil and coolant. Especially ideal for automotive vacuum lines, turbo vacuum hose, boost vacuum hose, and so on. | DIMENSIONS: Package includes 4 sizes of silicone vacuum line, ID:0.12inch, OD:0.35inch; ID:0.16inch, OD:0.39inch; ID:0.24inch, OD:0.47inch; ID:0.39inch, OD:0.63inch. The length of each line is 5FT. Please see product images for more detailed size information and check the size carefully before buying. | WHAT YOU GET: 4× Silicone vacuum hose (1 piece for each size). Please contact us if you have any problems, we are pleased to serve you.