Electric Diamond Sharpener by Firestone.
Super-fast, super easy one-step sharpening. Sharpens both sides of the blade simultaneously at the correct angle with blend of multiple aluminum silica, ceramic and diamond counter-rotating wheels. Creates a burr-free, razor-sharp hollow ground edge. Works on all knives, even serrated. Black housing. Measures 6 1/8" x 5 5/8" x 3 3/4".