Aerospaced Grinders are proudly made in the USA and are CNC machined from a solid block of high grade aluminum. Featuring diamond-shaped, razor sharp teeth that shred through dense herbs with ease. This 4 piece grinder consists of a grinding chamber, storage chamber and pollen catch. Each storage chamber contains a mesh screen so that only the smallest parts of your herb fall through to the pollen catch. Aerospaced grinders are available in several colors so you can find one that fits your style.