Made of metal chrome plating, durable design, long-lasting quality construction. The main connection and extension functions,big head is connected to a hose or a hand holding tube,small end is connected to the suction head. Connect with the Vacuum Cleaner,extend the working length and support the Vacuum Cleaner. Please measure the inside diameter of your product before you order. This is very important. Otherwise, it will not be installed. Fit many vacuum brands attachment. Specification: Material: Metal Chrome Plating Size Chart: Large: Shrink Size: 600x35x34mm/23.62x1.38x1.34inch Elongation Size: 1000x35x34mm/39.37x1.38x1.34inch Universal Inner Diameter: 35mm/1.38inch Big Head Inner Diameter: 35mm/1.38inch Outer Diameter of Small Head: 34mm/1.34inch Length Before Stretching: 60cm/23.62inch Length After Stretching: 100cm/39.37inch Small: Shrink Size: 480x31x32mm/18.90x1.22x1.26inch Elongation Size: 804x35x34mm/31.65x1.38x1.34inch Universal Inner Diameter: 32mm/1.26inch Big Head Inner Diameter: 32mm/1.26inch Outer Diameter of Small head: 31mm/1.22inch Length After Extension: 804mm/31.65inch Length Before Stretching: 480mm/18.90inch Package Includes: 1 Piece Vacuum Cleaner Tube Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!