The PTFE Tubing Kit for Coaxial, Triaxial, and Quadaxial Needles consists of a male Luer connection (for connecting to a needle) and a female Luer connection (for connecting to a syringe). The PTFE tubing is 1.6mm ID and 3.2mm OD and can be cut to length as needed. The kit includes 2 feet. PTFE is extremely chemically-resistant. The tubing connects to the Luer fittings with a push-to-connect fitting. If you prefer FEP tubing or need a custom configuration, see this item.