https://www.phoenix-paints.co.uk/products/sharman-wheels/4mm-steam-locomotive-driving-wheels/4mm-plain-steam-locomotive-driving-wheels/sw-s204
Just seen this in the last few days and a set arrived today. Just like Mike used to make!
Also, Phil has used a High Level Roadrunner+ gearbox with a D2 extender and a new style1015 motor.
Cheers Ian