Stainless Steel allows you to use this grinder for salt or pepper. Smooth action makes this single handed grinder easy to use. Hand turned from Ailanthus. Ailanthus is also known as “Tree of Heaven”. This is a unique species that has its origins in Eastern Asia. Large Ornate clusters of small yellowish-green flowers are produced on the trees in June. In summer single seeded winged fruits are produced on the female trees. Individual trees may produce 315,000 seeds annually. Mature trees grow to a height up to 100 ft with a diameter up to 3 ft. To fill your grinder just unscrew the bottom and insert your favorite pepper or grinder salt. Has a food grade finish to protect the wood. Grinder height: 5 3/4"