It's a well known fact the Lambretta spark plug is in an awkward position and hard to get to, especially when a TS1, RB or Monza cylinder is fitted.
So Mark Broadhurst came up with this really great idea to make life easier, with these points:
Knurled finger grip to remove plug when hot
13mm Hexagon head so you can use a spanner or socket that is always with you
Fits all type of engines with a standard style spark plug