Specification: Made of pure medical grade silicone. Have good biocompatiblity and non-toxic. Exclusive soft seal cuff can be inserted comfortably to minimize potential trauma and increase sealing. Strength neck and tip eases insertion and prevents folds dring insertion. Reinforced LM specially design for ENT, opthalmic, dental and other head and neck surgeries. Kin-free wire-reinforced tube eliminates the risk of airway tube occlusion. Packing: 1pce/pouch, 10pcs/box, 80pcs/arton Lead time: within 3-4 weeks / depending on quantity CE and ISO certified OEM is available