Medium (pre-bent) tubing with dimensions of 1.93 mm internal x 3.1 mm external diameter. For use with behind the ear (standard power) hearing aids with earmoulds

Thick (pre-bent) tubing with dimensions of 1.93 mm internal x 3.3 mm external diameter. For use with behind the ear (power & super power) hearing aids with earmoulds.

Stay Dry Medium (pre-bent) has a special coating on the inside of the tube to help prevent moisture forming. If your hearing aid suffers from this problem changing to Stay Dry is recommended. You should also consider the use of a hearing aid drying product which will considerably extend the life of your hearing aid and prevent costly repairs. Dimensions of 1.93 mm internal x 3.1 mm external diameter.

Stay Dry Thick (pre-bent) has a special coating on the inside of the tube to help prevent moisture forming. If your hearing aid suffers from this problem changing to Stay Dry is recommended. You should also consider the use of a hearing aid drying product which will considerably extend the life of your hearing aid and prevent costly repairs. Dimensions of 1.93 mm internal x 3.3 mm external diameter.