** This brand requires that all warranty claims be handled with them directly.** Precision-crafted in pure, non-toxic brass The more Helix is used, residue builds creating a sticky filter for a debris-free experience Intended use for dry herb/flower Double helix design increases surface area and length by 2.5x, cooling airflow Exterior dimensions: 90mm L x 13mm D Weight: 1.9 oz Limited lifetime warranty Designed in California, assembled in Taiwan