If you hate to sharpen instruments, the maker of superior PDT Cruise Instruments has the answer! The Ultimate Edge Kit is so fast and easy that a child could use it - stop, rest and glide! To use, just hold the PDT-Gleason Guide on top of a sharpening stone with one hand and sharpen with the other. The built-in stop and angle rest help keep the instrument perfectly angled as you glide the instrument along the guide. Stainless steel construction is fully sterilizable. PDT-Gleason Guide only.