Please note: Your original tubing shape should resemble the item image. Otherwise, it will not fit your bell. Eartips: Latex free, soft-sealing large. Ear tubes: Chrome finish / Interchangeable with original Littmann soft sealing eartips Eartips to diaphragm - approx 27 inch. Double Y yoke position to diaphragm Kindly examine the product image to ensure its appearance is compatible with your model for a proper fit.