• Quality and reliability in a convenient package. • Includes a small (1.27 cm) gray non-chill bell sleeve. • Contains a dual-frequency diaphragm and rim set for the stethoscope bell, in gray. • Compatible with 3M Littmann Classic II S.E. stethoscopes. • The kit includes a gray dual-frequency diaphragm and rim for the adult bell, and a gray non-chill rim for the pediatric bell. • Includes two small (1.27 cm) gray snap-tight soft-sealing eartips. • Dual-frequency diaphragm technology allows you to hear different frequency sounds by adjusting the pressure on the bell. • The soft-sealing eartips conform to any ear, providing excellent acoustic isolation and comfort. • The eartips fit firmly onto the ends of the ear tubes, requiring significant effort to remove them. • Product dimensions: 0.1 cm wide, 0.2 cm high, 0 cm long. • Product weight: 0.028 kg.