Facom 7mm (9/32") Roller
Type Stud Driver Set - popular size for BMW M50/SM52/S54 head
The 287 Series are the best and
most compact stud extractors I've ever used. Studs are gripped in
either direction (ie, the tools can be used to remove or install
studs) by 3 sets of rollers (see photo) . 1/2" drive for plenty of torque.