You can’t go wrong with these direct replacement spiral planer knives for your Shop Fox W1724 15” Planer. The knives are made of high-speed steel (HSS) that has been heat-treated for exceptional strength and improved cutting performance. With these knives you will achieve smooth results on every project. The spiral knives cut wood with a shearing action, giving the planer quieter operation and smoother cuts with less tear-out than with straight knives. Since the spiral knives are self-indexing for the correct knife height, you no longer have to waste time manually setting the knife height with a jig. These planer knives feature an alignment tang for quick and easy blade changes. Prevent delays and meet your production deadlines!