This is Flexaust Flex-Tube PU medium weight clear and yellow polyurethane hose with external ABS helix. Since it is polyurethane it is tough enough for many applications including abrasion resistant applications, woodworking / furtiture industry, agricultural, contrete floor, Silica Dust, Surface Prep Dust Collection, mulch blowing, industrial vacuum cleaners, lawn and leaf collection, lav waste disposal and much more.