This is a medium weight black thermoplastic rubber flexible hose for a lawn and leaf vacuum with a spring steel wire helix. Note: There are at least 3 ways to measure the hose; compressed (in the box); relaxed (just sitting out of the box), and stretched (two people pulling, one at either end). We sell this as a stretched out length, and it will be shorter in the relaxed position and significantly shorter in the compressed position. Used in many applications including but not limited to Blown Film Extrusion, Silica Dust, Chemical Plants, Sheet Metal, Dust Collection Hoses, RV Manufacturing, Injection Molding, Pollution Control, Landfill Venting, Plastic Bag Machines, Off-road use, Pipe Organs, Paint Spray Extraction and leaf and lawn vacuums and truck loaders.