Premium diagnostic instrument has chrome-plated otoscope head designed with integral and swivel lens. 5 interchangeable bayonet-catch aural specula (1 pediatric, 2 small, 1 medium, 1 large). Sterilizable and autoclavable. Replacement items:Item1229-1:  Bayonet-catch specula adapter1229-2:  Push-Fit Specula Adapter(These are the specula included with item 1224)1230BB:  Bayonet-catch type speculas.  (Adapter is required in order to use these disposable specula with item 1224)