<ul><li>Phonak recommends these, their original replacement parts from Hearing Aid Battery</li><li>Tubes fit Ambria, Cassia and Solana open fit styles.</li><li>Audiologists recommend changing these hearing aid tubes every 6 months.</li><li>The size is printed on the tiny end so use a loupe and bright light so you can see it.</li><li>Blue lettering is for the Left Side Hearing Aids - these are Size 1-L</li></ul><br><br>(2-pack) Slim Tube HE refill Size 1-Left screw-in type hearing aid replacement tubes for Phonak. Fits Ambria, Cassia and Solana open fit hearing aids. Phonak recommends these original equipment manufacturer replacement parts to keep you hearing aids in top working condition. Please confirm tube length before ordering as these tubes are NOT REFUNDABLE and NO EXCHANGE.

(2-pack) Phonak Slim HE Tube: SCREW-IN type (1-L for LEFT SIDE)