Infant Ear Tips for ER-3A Insert Earphone (4 mm – red) – 20/pack$37.50 Infant Ear Tips for ER-3A Insert Earphone (4 mm - red) - 20/pack quantity Add to cart SKU: ER3-14E Category: EP Ear Tips Related products Disposable Foam Ear Tips for ER-3A Insert Earphone (jumbo, 18 mm – yellow) – 24/pack $35.00 Add to cart Infant Ear Tips for ER-3A Insert Earphone (3.5 mm – red) – 20/pack $37.50 Add to cart TIPtrode® Electrode Ear Tips for ECochG – for use with ER3-60 (regular, 13 mm) – 20/pack $75.00 Add to cart Disposable Foam Ear Tips for ER-3A Insert Earphone (regular, 13 mm – yellow) – 50/pack $26.50 Add to cart