PLEASE NOTE: Your original tubing shape should resemble the item image as shown above. Otherwise, it will not fit your bell. If you are still unsure, please contact us before purchasing. Eartips: Latex free, soft-sealing large. Tubing: latex free, single lumen. Eartips to diaphragm - approx 28 inch Ear tubes: Ergonomically shaped Y position to diaphragm - about 21 inch. Kindly examine the product image to ensure its appearance is compatible with your model for a proper fit.