The JET VS-004 Mill Belt helps provide reliable power transmission for compatible JET milling machines. It works by transferring power from the motor to the spindle drive system, supporting smooth speed changes and consistent machining performance. Made to replace a worn, stretched, or damaged mill belt, it helps restore efficient power transfer, reduce slippage, and maintain dependab... https://www.wholetoolbox.com/jet-vs-004-mill-belt/VS-004.html