Make it easier to work at your router table with the accurate and precise Porter-Cable 75301 Height Adjuster. This handy tool performs a variety of uses, from making adjustments to simplifying bit changes--all without necessitating hunting for adjustment screws or crawling under the table. It works quickly to release or clamp the router motor and alter the height of the bit. To use, just insert the 75301 through a hole in the table, unlock the clamp, then put it through another hold and adjust the height while checking with the calibrated dial. Then simply return to the first hole and repeat the clamping process.