Etymotic Research ER4-14F Replacement Foam Eartips for Etymotic Earphones (Black, 7 Pairs) (Discontinued by Manufacturer) Replacement foam eartips for Etymotic earphones High level of noise isolation For ER4, ER6, ER6i, ETY8 and other Etymotic in-ear style earphones Black color Includes 7 pairs of replacement eartips