Needles for use in patients, silicone tipped needle for atraumatic insertion. Back eye for uninterrupted blood flow through the needle. Rotable wings for firm grip, easy turning and secure fixation. Smooth Geometry for laminar blood flow. Modified hub design with black mark for positioning the bevel accuretely. Kink resistant tubing with smooth occlusion clamp. Color coded wings for indentification for needles size. Option for singleTwin Fistula needles. Disposable, sterile, non pyrogenic.