Jimps...those tiny grooves on the upper and/or lower side of the tang. Wonderful little invention. Kind of like traction grooves on the tang. Improves grip. I prefer my jimps on both sides, but at very least on the bottom. I have a few razors with no jimps and I realize I don't like those razors as much. When did manufacturers start adding jimps on straight razors? What's your preference regarding jimps?