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