Each stethoscope is handcrafted from high tensile strength German stainless steel.22"" tubing and lightweight designThick walled tubing minimizes background interference.The color coordinated non-chill ring and diaphragm retaining ring provide excellent patient comfort.All models come in a foam-lined box with two extra sets of ear tips and one extra diaphragm.Aluminum binaurals.Medline Pediatric and Neonatal Stethoscopes Are Sized to Meet the Needs of the Practitioner and PatientPediatric And Neonatal Stethoscopes - Neonatal, Gray" Case Pack 1