Phonak HE11 hearing aid earhooks have a ''female" screw fitting onto the hearing aid - see illustration below. They are available in standard or mini sizes in a range of colours. A 680 suffix indicates that it has an acoustic filter, there are also tamperproof options for paediatric use.
The acoustic filter is a small white blob inside the earhook near the tip, it is difficult to see in photographs but you can if you hold it up the the light.
3P0098
Phonak HE11 680 (filtered) Standard hearing aid earhooks in...
3P012
Phonak Tamperproof HE11 680 (filtered) mini hearing aid earhooks...
3P166813
Phonak Transparent Tamperproof HE11 mini hearing aid earh...
3P0041667131
Phonak HE11 Transparent Standard hearing aid earhooks - supplied...
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Connevans Limited, Bridge House
1 Nutfield Road, Merstham, Surrey, RH1 3EB
01737 247571 info@connevans.com