How long a cutter lasts is often determined by the collet holding it. Poor quality collets can wear out quickly and often result in broken cutters and sometimes damage to the router itself. That's why we only supply one standard of collet - the best. However, we do strongly recommend that collets are inspected and cleaned every time a tool is changed and renewed on a regular basis. Every 3-6 months under normal operating conditions.
E Series, Tornado F3, '09 V Series (If the router you have is not listed, contact us for advice.)