Lansky Rubber-Jaw Multi-Angle Knife Clamp
The dual thumbscrew Soft-Grip Clamp was designed specifically for those looking for an easier to use clamp, that would also prevent scratching on coated or highly polished blades.
For sharpening blades 1/2" wide or less (such as tiny swiss army-type blades), use the Standard Knife Clamp.
Not for use on blades 1/2" wide or less.