The ready to use 2.5MM Otoscope Ear Specula are made of latex free materials to ensure safety and lessen the risk of allergy attacks on patients used on. With the small diameter, and the smooth edges it can comfortably fit the ears of infants and small children without hurting them. These can also be used on adults or older children who have small ear canals or those who have ear wax blocking their ear canal. Otoscope ear speculas are compatible with a range of otoscopes with Heine style fit.