Your search for "hamax" revealed the following:
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Carrier adapter (Caress)
Mounting plate with shock absorber for a comfortable bike ride for the child. Fits luggage trays between 120 - 180 mm The pipes must be round and between 10 - 20 mm Integrated suspension for maximum comfort for the child To be attached to the bagasse board, in accordance with...
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Extra fastening bracket
An extra fastening bracket allows the child bike seat to be switched from one bike to another in seconds. Features a quick-release button for easy seat removal. The extra fastening bracket is available in two variants: standard and lockable. Description: Fits frame tubes from 28-40mm (round) Easily switch your Hamax...
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Extra fastening bracket (Observer)
Extra bracket for the front mounted child bike seat Observer. Frame thickness between 20 – 28 mm.
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Extra hitch for second bike
An extra hitch allows you to switch the carrier quickly between two different bikes.