Miter gears are a single kind of bevel gears where the two rotational axes intersect. When speaking of narrow definition of bevel gears with capability to increase or lower speed, miter gears don’t have that ability because of the pair’s same number of teeth. Their purpose is limited to the modification in miter gear china transmission path. Because they are a kind of bevel gears, the essential characteristic of bevel gears can be found such as presence of gear forms of straight cut, spiral slice and types.
Also, because the shafts can be set to any angle, presently there are miter gears with non-90 degree (non-perpendicular) angle called angular miter gears. Ever-power is capable of producing angular miter gears with shaft angles in the range of 45 to 120 degrees.
Because a pair of straight tooth miter gears has the same number of teeth, apart from small differences such as place screw holes and key methods, the same two gears may mate with one 
another. However, in the case of spiral miter gears, even when the number of teeth are the same, the twisting directions will vary. Therefore, the same equipment can’t be meshed together, and it is necessary to pair the right and remaining handed pairs.
Bevel gears are classified in different types according to geometry:
Right bevel gears have conical pitch surface and teeth are right and tapering towards apex.