Save when you buy the 2-Pack!</br></br>Product Description</br></br>6? Heavy Duty CPAP Tubing * CPAP Tubing comes with standard 22 mm adapters * Dark Gray * Fits most CPAP and BiPAP machines * HCPCS Code: A7037 * Providers are responsible for determining appropriate billing codes for Medicare Program claims</br><br/>http://www.amazon.com/gp/product/B017OE7CI2