Marttiini Knives 1515114 Oval shape of this sharpener is ideal for sharpening products Made in FINLAND 5 7/8 inches overall 2 inches oval double sided 300/600 grit diamond sharpening surface with hook groove Oval shape of this sharpener is ideal for sharpening products that have a curving blade, such as skinning knives, augers, scythes and sickles Also excellent for sharpening fillet and kitchen knives