This is a fan belt which runs the  MG Midget 1968 to 1974

For minis with latest A plus water pump pulley CAM6408 (4.75" wide) and an alternator. This belt is slightly shorter than GCB10838 so always keep a spare so you know which size belt fitted your car best. This seemed to be fitted to most cars from 1980-1996.

1275cc from 1990 also used this belt with the large pulley.