PRODUCT SPECIFICATION Package contains 6pcs silicone vacuum tubing hose, each 5 feet (1.5 meters) long, with inner diameters of 3 mm (1/8"), 4 mm (5/32"), 5 mm (3/16"), 6 mm (1/4"), 8 mm (5/16"), and 10 mm (3/8") respectively. 1 of each size, with 1/8" (3 mm) wall thickness. HIGH QUALITY SILICONE MATERICAL Our vacuum silicone hose is made of high temperature reinforced silicone to ensure strength and durability. The silicone material has no irritating odor, has high heat resistance, is not easy to twist and deform, has a smooth surface, is soft and tough, and has a long service life. WIDE APPLICATION This automotive vacuum hose is ideal for general purpose air and water transport within the engine compartment. Ideal for custom turbocharger or intercooler duct fabrication, DIY air intake or radiator cooling systems in automotive plumbing, marine and industrial environments.