Damper fitting kit
 
Pair of special front hub nuts + pair of top weld-on brackets for mounting shock absorbers, designed for all drum hub models. 

These amazing nuts were initially designed and sold by the Italian company Omega in the 70's. They advertised these to fit all Series 1, 2, 3 GP DL, J range and Lui / Vega / Cometa models. However, they also fit to early open-frame models as well. Basically they will fit all models that have a DRUM type front brake! 
They are 5mm thick and unlike original Lambretta damper brackets, these will not collapse under extreme use. 

This kit can be fitted to a multitude of Lambretta models from a Model C through to a Vega 75. A simple,  cheap, high quality upgrade for all Lambretta scooters.

Where to weld the upper brackets depends on your shockers but we have seen that the distance (centre-to-centre of the 6mm mounting holes of the nuts on the bottom and the weld-on brackets at the top) is 22.5-23cm on average.