These grinders from Cali Crusher are of their Homegrown variety, meaning they have been made right here in the USA in San Diego! Engineered from medical grade aluminum, these grinders were made to feature ample details to enhance your grinding experience. With their 4-way quicklock feature, you wont need to worry about your grinder getting jammed or cross threaded. Even better, you get more loading space for your legal smoking herbs and get a finer cut with the indestructible radial cut blades. These grinders from Cali Crusher are a top of the line grinder that is perfect for making your smoking experience that much easier to enjoy!