Prop-Shaft : ATC-700 (BMW X5, X6) Extra Long Spline 8mm Bolts to Diff
BMW X5 & X6 E70 & E71 with ATC-700 Transfer Case
15mm Longer Spline Drive Shaft / Propeller
15mm longer than the OEM version,
Newer Type uses 8mm Bolts to Diff
Older Type uses 10mm Bolts to Diff