Features: Soft Brush: The ultra-soft brush prevents CPAP tube damage while still providing excellent cleanliness. Easy to use: first put the round handle of the brush into the tube, then extend the handle from the other end of the tube. Easy to Clean: The brush extends 7 feet so you can easily clean the entire tube at once. Save Space: It can be folded into a small plastic bag without taking up much space. Fit Model: The 7 feet(84-inch) brush fits for standard CPAP tubing with about 22mm/0.87in and about 19mm/0.75in diameter. Specifications: Material: 304 stainless steel Color: white Packing List: 2 * Cleaning Brush