Three-Channel Oxygen Supply Tubing – Special design has three inside channels that help prevent the tubing from becoming occluded. Ideal for home patients where long lengths can cause a potential kinking problem. Available in lengths from 4′ to 100′. Special or custom lengths available…a Salter service oriented benefit. Note: Oxygen supply tubing also available in smooth bore configuration. Innovative Tubing End Fitting – Vinyl material with sufficient clarity to view patency – Designed with “Ribbed Body” to permit easy gripping when making connections Rounded and tapered edges to prevent snagging or catching on various surfaces.