The RAW LIFE 4-piece Grinder is modularly engineered to last a life time. Every component is easily replaceable, even the screen. You can add or remove components from the grinder to customize it as you like. An example would be removing the screen and using it as a 3-piece grinder. This grinder is created using a 6063 aluminum-magnesium alloy with a strength of 18,000 PSI. This "Die-Hard" shredder is a modular so you can shred the way you want.