The Cali Crusher Homegrown grinder is made using high-quality 6061 aerospace aluminum. Designed with CAD Solid Works and produced with CNC precision engineering our grinders come with type II anodized protection. Cali Crusher Homegrowns utilize powerful neodymium earth magnets ensuring a strong hold. They also feature a removable O-ring that allows for a smooth grinding action. Our grinders are bead blasted, producing a scratch resistant finish. An ultrasonic cleanse leaves this product free of metal shavings and CNC fluid making it medical grade. All Homegrowns come with our patented, dual-action, radial cut tooth design and Quick Lock Technology. Our blades are indestructible and covered by our Limited Lifetime Warranty. Our products are intended for use with herbs and spices for cooking. Now bundle America's favorite grinder with our Grinder Case and Puck Storage.