Not the hardest of metal, tried to pull out a small needle roller bearing from a drop link on a motorcycle and it pulled through and destroyed the bearing and all the needles fell out. Not sure how I can get the case out now. It ripped the edges of the puller as its soft metal but for normal bearing this is fine. Puller legs aren't very adjustable and wobbly!
With slight modification managed to pull out several 25mm id needle roller bearings from blind holes, though holes had space behind for pulling flange
With slight modification managed to pull out several 25mm id needle roller bearings from blind holes, though holes had space behind for pulling flange . Would purchase again though pulling frame joints are a little sloppy.