had to file them some, forgot my ring expander and had to run home to get it, found this in my tool box, don't remember how it got there, it works though, neat little gadget but ended up using the regular plier type expander instead.
I've got a few K-D MFG tool in various tool boxes and drawers. Just did a search, and they're now owned by GearWrench/Apex Tool Group. Haven't bought any of their stuff for years, but see some good news in what I found on the interwebs. Award-winning GearWrench customer service and the rock-solid GearWrench lifetime guarantee come with all GearWrench tools, including rebranded KD Tools.