Choose Options Quick view Smiths Medical Asd Inc Bivona FlexTend TTS Neonatal Straight Neck Flange Tracheostomy Tube, Size 3.5 $529.29 Bivona flextend tts neonatal straight neck flange tracheostomy tube, size 3.5.Includes: individually sterile with obturator, twill tape and disconnection wedge.3.5mm i.D.X 5.3mm o.D.X 86mm overall length. Compare Choose Options Add to Wishlist