Straight miter 90 degree mesh transmits mechanical power between perpendicular shafts
Pressure angle of 20 degrees for a lower contact ratio between gears, resulting in higher load capacity than smaller pressure angles
Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion
Unhardened teeth for 1:1 gear ratio applications where hardness and strength are not needed to transmit torque and motion