Try dv247, if you go on their webpage , in search box put 'slide', it shows you various types and clicking on them shows a 'more info' description. Start here, https://www.dv247.com
Different materials give different tones I thought,most guitarists use metal or glass I thought, I read somewhere, there's no hard rule to say which is best or what type you should use. They reckon a heavier slide is best for acoustic, brass maybe something like that.
Try dv247, if you go on their webpage , in search box put 'slide', it shows you various types and clicking on them shows a 'more info' description.
Start here, https://www.dv247.com
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