Quality made tool, doesn't work with tc thunderhawk - SSK Firearms Breech Plug Removal Tool

I bought this as a replacement nipple wrench for my TC Thunderhawk. The diameter is too large to fit the bolt passage to get to the nipple. Also, the slot cut into the end is to large for a standard #11 nipple. To be fair, this purchase is on me. No where did it state it would work with the thunderhawk. Figured it could be machined to fit the bolt/ striker assembly bore if the slot for the nipple would have fit but it didn't and don't know what it would fit. Maybe a musket nipple? If I had to do it over again would have contacted SSK to get the particulars. My fault.