
This style is a neat compromise between the big knurled disc and the reverse thread socket, The little rollers you can see in the picture clamp shut when you turn the socket. Extraction of the removed item is easier than the reverse thread sockets.

Stud Socket Extractor Installer Remover Roller Type 4pc Metric/Imperial 6-12mm
2.0

Stud Extractor Roller Remover Bolt Removal Socket 4pcs Metric or Imperial TE254
4.0

Socket Extractor Installer Remover Roller Type 4pc Set Metric or Imperial AT156
5.0