This block is to replace the old oilstone you all know so well. Thing is, this one achieves an edge in half the time, and can also be used to ´grind´ down highly worn tools such as axes, pruners, etc.
Block is 2´x 6´ (5cm x 15cm) mounted on a quality walnut pedestal. This is really the way to sharpen all your tools and knives. Well worth the cost.