Cali Crusher introduces the revolutionary American-made Homegrown Herb Grinder. This designer herb grinder is packed with the patented 4-Way Quick Lock System. It replaces the traditional threads, and eliminates the possibility of cross-threading your grinder. Cali Crusher grinders are manufactured with high-quality 6061 aerospace aluminum and come with type II anodized protection. Cali Crusher Homegrown's utilize powerful neodymium earth magnets to ensure a strong hold. They are bead blasted, producing a scratch resistant finish. An ultrasonic cleanse leaves them free of metal shavings and CNC fluid application makes this product medical grade. Homegrown's larger drop holes allow for a free flow grind. The teeth come with a lifetime guarantee.