Features: This Oxygen Connector Adapter connects oxygen tubing from any tank or concentrator to your CPAP or BiPAP machine. The capped O2 port allows you to seal off the connector when not in use, helping maintain your CPAP system's performance without removing the entire adapter. Designed with a 22mm ID connection on one end and a 22mm OD connection on the other, it fits standard CPAP tubing securely. This adapter is latex-free and constructed from durable plastic for reliable use. Specifications: Material: Plastic Size: 5.1 x 2.2 cm Color: Transparent Quantity: 1 Piece Package Includes: 1 x Connector Adapter with Cap Note: - Please allow 1–3 mm error due to manual measurement. - Color may vary slightly due to screen display differences.