Product Description: 1/8" inside diameter x 1/4" outside diameter.50' roll A consistent performer lot after lot, Tygon Fuel and Lubricant Tubing is the most requested fuel and lubricant tubing for a variety of applications -- from small engine fuel lines to coolant transfer. Specifically designed to handle most fuels and industrial lubricants, Tygon Fuel and LubricantTubing resists the swelling and hardening caused by hydrocarbon-based fluids. This significantly reduces the risk of failure due to cracking and leakage. Its minimumextractability safeguards the liquid or vapor being transferred against adulteration.