If it takes special tools to remove the hardware that I don’t need that knife. That may be one of the reasons that I love my CRK Mnandi. They encourage you to periodically disassemble the knife to clean and lube it.Unless you can get a skinny pair of pliers to work without marking the fastener, it looks like you'd need a proprietary tool from the maker - if they are willing to supply such. Some don't. I try to avoid knives with hardware like that. What, I'm not allowed to disassemble my knife? That's almost an insult.