1. Single Stage Bevel gears consist of two gear wheels work at an angle of 90 degrees. The gears are cone-shaped and have cut teeth aim to transfer motion to a new angle. 

2. Bevel gears are commonly used in hand drills to change the direction of rotation from vertical to to horizontal in the drill bit. 

3. Bevel gears can be adapted to serve various different applications. These gears have different numbers of teeth on each gear half change the speed of rotation as they change the angle