Originally Posted by
icemilkcoffee
Shimano freewheel tool:
https://www.amazon.com/Park-Tool-Fre.../dp/B01FI8WWZY
Note that there are two different types of Shimano freewheel tools- the old type and the new type (the new type is sometimes called UG style). The old type is smaller and NOT compatible with this freewheel. The old style looks like this:
And not that the old style tool will not work unless you remove the axle first; there isn't enough room to slide the tool in. You need the thin-wall tool.