Flywheel and driveshaft spline tool sizes

[onlymeagain]

Does anyone know the spline tool sizes required for the driveshaft and flywheel bolts please? It is on a 2006 A3 model, with the BKC engine, not sure if it is any different on the others.

Thanks in advance.

 

[Best84]

I brought this set for the driveshaft bolts.
Laser Tools | 4939 | Spline Bit Set - 1/2"D 6pc

M16/M18 cant remember which, set was only £20 from a local tool shop.