A Hypoid gear is used when the included angle is square and the distance between axes is relatively small. A hypoid is a type of spiral bevel gear whose axis does not intersect with the axis of the meshing gear. They are cone-shaped gears similar to spiral bevel gears except they transmit motion between non-intersecting shafts. The shape of a hypoid gear is a revolved hyperboloid whereas the shape of a spiral bevel gear is normally conical. Generally, compared with bevel gears, hypoid gears can obtain higher speed reduction. Their large contact ratio allows heavier load transmission compared to similar size bevel gears. Less sliding and high efficiency result in smaller capacity motors.