The valve spring remover I have right now requires too much patience to use. It’s one of the small hand-held types that hook onto the spring with 2 legs, and you crank down the compressor by hand. Sometimes it falls right off, other times it just stares at you doing nothing. So I opted to replace it for a more useful, sturdy one. The bearing tool is only for SBC but it was dirt cheap and until I can find a better one on craigslist, it got the job done.