Martin TS824 Spur Gear, 20&deg; Pressure Angle, High Carbon Steel, Inch, 8 Pitch, 7/8" Bore, 3.25" OD, 1.500" Face Width, 24 Teeth Transmits torque between parallel shafts to provide rotational power to another part of a motorized system Pressure angle of 20 degrees for a lower contact ratio between gears, resulting in higher load capacity than smaller pressure angles Diametral pitch of 8 for applications where transferring torque is more important than controlling changes in speed and direction of rotation with precision High carbon steel for tensile strength and hardness