What size spline for drive shafts??

ganda_cupra

VW Commercial Technician
Sep 4, 2006
286
0
Near Sheffield
Most likely an M10. Although could be either M8/M10 or M12 dependent on vehicle.

You can buy multi piece bit sets with 3/8 and 1/2 ratchet bit holders, which include long and short triple square (spline), torx and hex bits for around £20.
Both Draper and Franklin are decent sets.