Product details:

GEDORE 8012910 Internal Extractor, 12-15 mm For extremely-tightly-packed ball bearings, bearing races, bushings, and shaft seals Simmering Operation: The internal extractor is inserted into the bearing and the spindle screwed in. The sharp turned-out shoulders of the pulling shell jaws will press outwards behind the part to be extracted. The counter-support brace is then added. Both feet must be aligned parallel to the spindle to ensure rigidity. The design can vary from the image