These tubes work on all machines that use Standard CPAP Tubing No need to use extensions or connectors Premium Hose is on the inside due to the bore design The flexibility of this tubing allows you easily move around the pillow and bed without causing a mask leak which will proper sleep therapy. Recommended Replacement Schedule: Once every 3 months Our universal CPAP tubing can hi-performance white tubing for the CPAP/BiPAP machine is , flexible, and preferred by CPAP users for the relief of the tugging, pulling, and tangling experienced with standard CPAP tubing. It is 20% lighter than standard tubing and many times more flexible, making it the perfect choice for smaller, masks that have easily seals. Ergonomic design cuff provides a secure seal and is easy to grasp and remove from mask/machine. Item Type:Sleep Snoring Type:AIR Tubing For use with for , , , Devilbliss, &Paykel and all other major CPAP/APAP/BIPAP machines in the market. Note:Due to different producing batches, product details might might a little different. If you minding the difference, please buy it carefully. Colour:Gray-White Material:plastic Size:Length:180 cm Package Contents: 2 * Hose Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.