This repair tool is designed to re-thread internal and external valve stems, along with inserting and removing valve cores.
Consists of repair tool and 4 valve cores
The Unofficial Lambretta Manual Update by Mark Haines
LAMBRETTA - ILLUSTRATED GUIDE TO THE IDENTIFICATION by Vittorio Tessera
Lambretta Performance Tuning and Conversions - 8099990
Lambretta Tuning Manual by Dave Webster - 8099992