Great addition to the Ken Onion Knife sharpener. This addition allows you to sharpen bulkier kit e.g. axe heads or garden items with blades, where as the sharpener is great at getting a razor edge on utility knifes. The only small issue is the plastic screw that tightens the grinder onto the main motor has flown off several times as it rotates and unscrews. Make sure the screw is very secure.
Simply the best and most versatile sharpener!