Worm gears (or wormwheel gears) and worms (or worm drives) are designed to work together to transfer movement between non-intersecting shaft at right angles. Worm gears and worms, which resemble spur gears and screws, respectively, combine to provide a high reduction ratio in a concise gear Ground Worm shaft system. Our surface worm gears and ground worms are designed for remarkably smooth and quite operation.