My Dad wants a knife sharpening kit for Christmas and it came kinda basic so I’ve been trying to fill it out. Anything else I can add? (He’s an angler so it’s for filleting knives I assume)

My Dad wants a knife sharpening kit for Christmas and it came kinda basic so I’ve been trying to fill it out. Anything else I can add? (He’s an angler so it’s for filleting knives I assume)

by sciencep1e