Features 1、CLEAR TRANSMISSION: Single head stethoscope bring clear sound transmission, no impurities to block sound transmission 2、PROPER HARDNESS AND GOOD ELASTICITY: The hardness of the ear hook shrapnel is between HR15N82.9~88.4, and the elasticity is suitable 3、STABLE WITHOUT FALL OFF: Each connection part is firm and reliable, and the listening effect is good, not easy to fall off 4、WIDE APPLICATION: This stethoscope is suitable for nurses, nursing students, for teaching and biology experiment, home use 5、WITH FLEXIBLE AND DURABLE TUBING：The tubing can effectively resists sweats, stains and oil. Black tubing lessens your concerns as well Specification ​Item Type: Single Head Stethoscope Material: Rubber, steel Package List 1 x Flat Auscultation Head 1 x Sound Guide Tube 1 x Ear Hook