4 MM internal diameter. 2.5 MM wall thickness. 550°F temperature rating. Available in black, blue, red, and yellow. Sold by the foot. The quantity you specify when ordering will be the length of the hose in feet, shipped in a single piece, For example, quantity 20 will be a single piece 20 feet in length.
Made in the USA.
Please note that silicone vacuum hose as well as other silicone hoses are NOT suitable for use with fuel or oil. Not suitable for use with food.