Corrugated tubing for trade sizes 3/8˝ through 1˝. Flame retardant, won't burn. Nontoxic and UV resistant. Rated for NEMA 4 and 4X applications when used with Heyco-Flex III Liquid Tight Fittings. Rated for NEMA Type 3R applications. Maximum flexibility, can be used in extremely tight quarters. Bend radius of Heyco-Flex III is equal to its outside diameter. No threading of the tubing required to install. This eliminates the possibility of cutting the tubing and creating leak paths. Easy, permanent assembly between the tubing and fittings: push the tubing over the fitting ferrule until the tubing clicks into place. Lightweight and lower installed cost. Quick and easy installation. For use with Heyco-Flex III Fittings. Straight, Sweep. Resists corrosion, oil, and water. For use in both wet and dry applications. Suitable for use in high vibration or flexing applications (automotive equipment, fiber optics, computer and peripherals, lab equipment, robotics, etc.). Voltage Rating: 300V. Mounting brackets are available. Order Part No. 8340, HF-28 Cutting Tool, for cutting Heyco-Flex conduit and tubing cleanly and evenly. For additional nylon conduit sizes, see HPAS.