Brush Set- 1pcs long brush for CPAP standard tube; 1pcs short brush for cleaning CPAP mask.</br>High Quality Flexible Stainless Steel and black strong nylon bristles is more resistant to dirt.</br>7 feet (84inch) brush fits the 22mm diameter standard CPAP tube.</br>Round handle on the end- Easy to pull the brush on the another hole.</br>Warranty- Proaller offer a full 30 day 100% money back guarantee and 1 year warranty.</br></br>Product Description</br></br><b>How to clean the tube easily:</b><br> 1. Put the round handle of brush into the tube first?? pull out the handle from the other end of the tube. Use a mild detergent and warm water for cleansing the CPAP tube.<br> 2. Keep the tube as straight as possible and gently work the brush in a back and forth motion?? in short strokes?? gradually working further inside the tube.<br> 3. Rinse