The Santa Cruz Jumbo Blue Shredder is an extra large version of their classic 4-piece grinder. Made of medical grade and ultrasonically cleansed anodized aluminum, this grinder will last and has a lifetime manufacturer's guarantee. Their innovated teeth design will grind your herbs to the perfect consistency. This grinder has a stainless steel mesh screen and a strong magnet in the lid, preventing spills. You can easily grind roughly 1/2 oz of dry material at a time. The super sharp teeth make quick work of large amounts of material. Unique threading pattern ensures your grinder stays butter smooth even after repeated, daily use. We guarantee this will be the last grinder you ever buy! Measures 4" in diameter. Made in the USA!