The Powermatic PM2000-255 Gear Block helps provide smooth and accurate blade height adjustment for compatible Powermatic PM2000 table saws. It works by supporting and guiding the gear mechanism that controls the raising and lowering of the saw blade, ensuring precise movement and dependable cutting performance. Made to replace a worn or damaged gear block, it helps restore smooth adju... https://www.wholetoolbox.com/powermatic-pm2000-255-gear-block/PM2000-255.html