The SmartCheck device comes with 12 single-use specula tips: 6 pediatric tips (2.7 mm) 6 child/adult tips (4.2 mm) Choose the largest specula tip that can comfortably be inserted into your child’s ear. The thinner, pediatric tip is recommended for children 6 months to 2.5 years. The wider, child/adult tip is recommended for people ages 2.5 years and older. For more information, please see the Instructions for Use.