Latex-free tubing Advanced two-in-one tube design 30 overall length Sturdy, chrome-plated binaurals Fully rotating chestpiece 2 extra ear tips (mushroom and bell style) 3 bell rings (adult, medium and infant) Extra diaphragms includedLifeSource Stethoscopes offer practical and affordable auscultatory technology to physicians, nurses, students and others. Latex-free tubing protects patients and medical professionals from allergens while providing a durable and reliable measurement tool. Fully adjustable stainless steel binaurals with a choice of ear tip styles provide comfort and enhanced sound transmission. The rotating chest piece on the Dual Head and Sprague Rappaport Stethoscopes allows flexibility in distinguishing high and low frequencies. LifeSourceMD Stethoscopes are available in four tube colors: black, navy, purple or hunter green.