Land Rover series 3 - 48 spline 18.5 mm. Range Rover -non airbag - 36 spline 17 mm col. Defenders 90/130 - 36 spline 17 mm col. Disco ( 2 spoke wheel only ) up to 96 36 spline. So it’s a bit ambiguous to say the least, the acid test is to see if you can see the spline.
