Unitron Moda Slim Tubes come with 5 tubes.

Replacement Slim Tube Earmold Tubes for all Unitron Moda models. Moda Slim Tube earmold tubes are available in 4 length sizes 0 through 3 with 0 being the shortest. All tubes are the same diameter, 1mm inside measurement. Each earmold tube has the size stamped on the tube near the end that goes in the ear canal.
Unitron Moda Slim Tubes require Domes on the ear canal end. Domes come in assorted sizes and are sold separately.

Unitron Moda Replacement Domes