Villiers 25:1 Conversion Kit
This replaces the No 3 (10:1 needle) for a No.2 to enable running on 25:1 fuel mix
To see if yours is already converted remove the needle within the throttle valve piston and there should be a number stamped onto it no 2 or 3
If a number 2 then your carb can already run on 25:1 fuel mix
All new 25:1 needles do not have any number stamped on them