One-piece Guedel airway, size 2, ISO 8.0, green x 100 Combining two materials with very different physical characteristics into one moulding, the One-Piece design eliminates the separate bite block found in all conventional Guedel airways. Loose or detached bite blocks constitute a real threat to patient safety and have been the subject of several hazard notices in the past. The One-piece design overcomes all of the associated risks. As well as improved safety, the One-piece also incorporates a soft tip reducing the risk of trauma to the patient.