I have a "Shake Sharp" razor that has a built in hone. You shake the razor and the hone pivot in and out sharpening the blade. Though I don't know if it's the blade it was designed for a DE blade fit even though only one edge id exposed. It's actually a nice razorshave like a crose between a DE and an injector.With The Grain said:ive got a dehaven diplomat, which is that model or very similar, takes a blade that isnt made anymore. interesting razor in that it has a built in hone in the head