What tools do i need for 6 speed HCF gearbox oil change

[Alanp]

Hi may have already been answered before but I can't seem to find it does anyone know what tools I need to change the gearbox oil on my 2005 A4 2.0 TDI S line 140 gearbox code HCF ie spline tool or Allen key and what size is required Thanks

 

[Alanp]

Ok did this today you need a 10mm allen socket for the fill and drain plug