Took me a few minutes to figure out how this worked since no detailed instructions were provided, but once that was done, the gimbal bearing on my Alpha One, Gen One came out easily enough. A word of warning: in my case this tool pulled the hollow shaft of the bearing partly out of the bearing assembly - enough that the seal on the back end of the bearing (there's one on the front and one on the back) fell off into the gimbal housing cavity. No big deal since my bearing was seized but if you decide your NEW/functional bearing needs to be pulled out for whatever reason (like if you didn't align the grease hole properly...), this MAY damage it like it damaged mine. Be gentle when extracting.