Hard High-Pressure Bendable Opaque Black Nylon Tubing for Air and Water Applications – Inner Diameter 0.18″ – Outer Diameter 1/4″ – 100 ft. Commonly used for air and water applications. Hard High-Pressure Bendable Opaque Black Nylon Tubing for Air and Water Applications. Is designed to have more range of motion and is impact absorbent. The tubing can be used in temperatures ranging from -60° to 200° F. Tubing is opaque, which will not allow you to see the fluid moving inside. Inner Diameter: 0.18 inch. Outer Diameter: 1/4 inch. Wall Thickness: 0.035 inch. Bend Radius: 1 inch. Maximum Vacuum: 28 in. By placing an order with LK Technologies, Inc. We also accept Cashier’s Checks and Bank Wire Transfers. Please specify the reason for the return. All return requests are permitted within 15 (fifteen) calendar days from the date of receipt of merchandise. Only if the items are in resalable condition. Product packaging must be in like-new condition; products will not be accepted for return if the packaging is cut, torn, written on, or otherwise damaged. THANK YOU FOR PLACING YOUR ORDER WITH TECHNOLOGYLK! WE APPRECIATE YOUR BUSINESS!