We are offering av fistula needle to connect blood lines of the blood vessels through needles when dialysis is carried out through an internal fistula back eye needle to minimize interruption of blood flow siliconised ultra thin walled & sharp beveled needle to minimize trauma to the patient soft, frosted and kink resistant pvc tubing flexible butterfly wing for proper fixation color coded wing for easy identification of sizes tube length : 30 cm sizes : 15 g, 16 g & 17 g.