Grason KR Series Eartip Kit in Plastic Box - 300/kit (25 of each size eartip)Single Use Eartips for use with most brands of Acoustic Immittance Instruments, Tympanometers, OAE Systems, Impedance Bridges, and Audiometric Earphones Compatible With: American Electromedics Models 81, 83, 85, 86 Amplivox Otowave with White or Black Probe Danplex EAR 3A Earphones Needs adapter (item # ER3 06) Earscan Micro Audiometrics Etymotic Research Ero Scan DPOAE, ER 10 Low noise Microphone ER10B, ER10D, ER3A Earphone with probe tip adaptor