This product comes well packaged with three alternative blades that are easily exchanged. The assembly book was not an easy read, read the essential parts and actually, no directions were needed for assembly as it was visually apparent. I have used many of the other cutters and threw them out after the first month as they required a lot of pressure to use and would not be worth the hassle to use. This product is sturdy, easy to use and requires little pressure to make perfect cuts, and will last a very long time. I can my potatoes, apples, and other items from my garden yearly, and this device is now one of the staples in my kitchen.